release: 0.3.0 persistent history, configurable openers, and dev info panel

- Lower Python requirement to >=3.8 for broader compatibility
- Update version to 0.1.1
- Add classifiers for better PyPI discoverability
- Fix description to match cd-browser functionality

CHANGELOG.md

@@ -4,16 +4,87 @@ All notable changes to this project will be documented in this file.
 
 The format is based on Keep a Changelog, and this project follows Semantic Versioning.
 
-## [1.0.0] - 2026-03-14
+## [0.3.0] - 2026-04-06
 
 ### Added
-- Initial release of the Python AI Dev Template
+- Two-line compact header with live session state: version, history count, filter state, hidden/files toggles, and development summary
-- Universal Python project structure using `src/`
+- Persistent history storage between sessions with configurable state path and bounded history size
-- `pyproject.toml`-based project configuration
+- History list rendering in most-recent-first order
-- Development tooling with `black`, `ruff`, `mypy`, and `pytest`
+- History filter mode (`/` inside history) with dedicated query and navigation behavior
-- `pre-commit` integration
+- Development info panel (`i`) with git context, detected stack, and suggested commands
-- `Makefile` with development, quality, and diagnostic commands
+- Configurable open-with menu order via `config.toml`:
-- `instructions-agent.md` for AI coding agent guidance
+  - `open_with.files`
-- `.env.example` for environment-based configuration
+  - `open_with.directories`
-- README with setup, workflow, and template reuse instructions
+- Automatic creation of opener config template when `config.toml` is missing
-- MIT license
+- New `opencode` opener support for directory actions
+
+### Improved
+- Filter label highlighting now works consistently in both tree and history filter modes
+- UI color behavior is now explicitly normalized to avoid terminal color bleeding
+- History selection and filtering logic aligned with reversed (most-recent-first) history rendering
+
+## [0.2.6] - 2026-04-04
+
+### Added
+- Incremental filter workflow (`/`) with contextual Enter behavior:
+  - Directories navigate in-place
+  - Files open the app menu
+- File visibility toggle (`a`) to switch between directories-only and mixed view
+- Open-with app menu (`o`) with arrow-key selection (`↑`/`↓`, `Enter`, `Esc`)
+- New opener support for `nano`, `less`, and `bat` for file actions
+- Blocking terminal app execution with UI state restore after exit
+
+### Improved
+- Open-with options are now context-aware (GUI/headless, file/directory) and only shown when executables are available
+- Better handling of paths containing spaces when launching openers
+- Extended README with full controls reference and platform compatibility guidance
+
+## [0.2.5] - 2026-04-03
+
+### Improved
+- Add explicit repository link in README for PyPI users to access the full demo and documentation
+
+## [0.2.4] - 2026-04-03
+
+### Fixed
+- Use absolute demo GIF URL in README so image renders correctly on PyPI
+
+## [0.2.3] - 2026-04-02
+
+### Added
+- Add project demo GIF at `docs/demo.gif`
+- Show GIF demo in README
+
+## [0.2.2] - 2026-04-02
+
+### Fixed
+- Include `cd_browser_post_install.py` in wheel/sdist so `cd_browser_post_install` works after `pip install`
+
+## [0.2.1] - 2026-04-02
+
+### Fixed
+- Prevent crashes when scanning directories with restricted permissions
+- Handle non-interactive post-install runs without failing on EOF
+- Fix shell reload message interpolation in post-install output
+
+### Improved
+- Make post-install shell integration idempotent (avoid duplicate `cd_()` entries)
+- Add test coverage for permission errors and post-install flows
+- Update default application name to `cd-browser`
+
+## [0.2.0] - 2026-04-02
+
+### Added
+- Interactive post-install script (`cd_browser_post_install`) for automatic shell integration
+- Option to automatically add `cd_()` function to ~/.bashrc or ~/.zshrc during installation
+- Improved uninstall instructions in README
+
+### Improved
+- Installation UX: clearer setup process with user prompts
+- Shell integration: better guidance for enabling `cd_` command
+
+### Added
+- Initial release of **cd-browser**
+- Terminal-based directory navigation
+- Interactive directory tree navigation
+- History navigation mode

README.md

@@ -1,46 +1,151 @@
 # cd-browser
 
-`cd-browser` is a terminal-native directory navigator for fast filesystem browsing from the command line.
+**Stop typing paths. Browse them.**
 
-It provides an interactive interface for exploring directories with the keyboard and returns the selected path at the end of the session so shell wrappers can change the current shell directory.
+`cd-browser` is a fast keyboard-driven directory navigator for the terminal.
+It lets you explore directory trees visually and jump to any folder instantly.
 
+![cd-browser demo](https://gitea.sakydogalo.es/saky/cd-browser/raw/branch/main/docs/demo.gif)
+
+Repository (full demo + docs): https://gitea.sakydogalo.es/saky/cd-browser
+
+## Why cd-browser?
+
+Working in the terminal often means:
+
+- typing long directory paths
+- navigating deep folder trees
+- repeating `cd ..` multiple times
+
+`cd-browser` provides an **interactive terminal UI** that allows you to browse directories with the keyboard and return the selected path directly to your shell.
+
+## Features
+
+- ⌨️ Fully keyboard-driven workflow (`↑` / `↓` / `←` / `→`)
+- 🌲 Expand and collapse directories (`→` to expand/enter, `←` to collapse/back)
+- 📜 Persistent history between sessions (`h` history mode, `b` back, `f` forward)
+- 🔎 Incremental filter mode (`/`, type to filter, `Backspace`, `Esc`)
+- 🧭 History filter mode (`/` inside history) with most-recent-first ordering
+- 📄 Toggle file visibility (`a`) to switch between directories-only and mixed view
+- ⚡ Fast jumps in large lists (`PgUp`/`PgDn`, `Home`/`End`, `g`/`G` in normal mode)
+- 🚀 Contextual `open with` menu (`o`) with app detection based on your environment
+- 🔁 Blocking terminal editors restore the UI state when they exit (`nvim`, `nano`, `less`, `bat`)
+- 🧩 Configurable app menu via `config.toml` with automatic template creation
+- 🛠 Development snapshot in header + detailed info panel (`i`)
+- 👀 Toggle hidden entries with `.`
+- 🖥 Native terminal interface
+- 🔁 Works with Bash, Zsh and other shells
+- ⚡ Returns the selected path to the shell (`Enter` to confirm, `Esc` to cancel)
+
+## Controls
+
+Normal mode:
+
+- `↑` / `↓`: Move selection
+- `→`: Expand directory, or enter when already expanded
+- `←`: Collapse directory, or go to parent
+- `Enter`: Confirm selected path and exit
+- `Esc`: Cancel and return the original path
+- `h`: Toggle history mode
+- `b` / `f`: Back / forward in navigation history
+- `.`: Toggle hidden entries
+- `a`: Toggle file visibility
+- `/`: Enter filter mode
+- `o`: Open selected entry with an app
+- `i`: Toggle development info panel
+- `PgUp` / `PgDn`: Page jump
+- `Home` / `End`: Jump to first/last entry
+- `g` / `G`: Jump to first/last entry
+
+Filter mode:
+
+- Type text: Filter visible entries in real time (case-insensitive)
+- `↑` / `↓`: Move inside filtered results
+- `Enter`: Apply filter and perform contextual action:
+  - Directory: navigate into it without exiting `cd_`
+  - File: open app selection menu
+- `Esc`: Exit filter mode and clear query
+- `Backspace`: Remove last filter character
+
+History mode:
+
+- `↑` / `↓`: Move through history entries (most recent at top)
+- `Enter`: Jump to selected history path
+- `Esc` or `h`: Exit history mode
+- `PgUp` / `PgDn`, `Home` / `End`: Fast history navigation
+- `/`: Enter history filter mode
+
+History filter mode:
+
+- Type text: Filter history entries in real time (case-insensitive)
+- `↑` / `↓`: Move inside filtered history results
+- `Enter`: Jump to selected history path
+- `Esc`: Exit history filter mode and clear query
+- `Backspace`: Remove last filter character
+
+Open with menu (`o`):
+
+- `↑` / `↓`: Move between app options
+- `Enter`: Launch selected app
+- `Esc`: Cancel
+
+The menu only shows apps available in your system (`PATH`) and context:
+
+- GUI options (when GUI is available): `code`, system `open`/`xdg-open`
+- Terminal options: `antigravity`, `opencode`, `nvim`, `nano`, `less`, `bat` (as applicable)
+
+## Opener Configuration
+
+`cd-browser` reads opener settings from:
+
+- macOS/Linux: `~/.config/cd-browser/config.toml`
+- Windows: `%APPDATA%/cd-browser/config.toml`
+
+If the file does not exist, `cd-browser` creates it automatically with defaults.
+
+Example:
+
+```toml
+[open_with]
+files = ["code", "open", "antigravity", "nvim", "nano", "less", "bat"]
+directories = ["code", "opencode", "antigravity", "nvim"]
+```
+
+You can reorder or remove entries to customize app priority.
+
+## Quick Demo
+
+Run:
+
+```bash
+cd_
+```
+
+Browse directories using the arrow keys and press **Enter** to jump directly to the selected folder.
 
 ## Documentation
 
 See the documentation index:
 
+```
 docs/index.md
-
+```
-## Features
-
-- Interactive terminal directory browser
-- Keyboard-driven navigation
-- Parent directory entry via `..`
-- Expand and collapse directory trees
-- Session navigation history support in the application state
-- Installable CLI command: `cd_browser`
 
 ## Installation
 
 Install the project in user mode:
 
 ```bash
-pip install .
+pip install cd-browser
 ```
 
-For editable local development:
+**Important**: After installation, run this to set up the `cd_` command:
 
 ```bash
-pip install -e '.[dev]'
+cd_browser_post_install
 ```
 
-After installation, the application command is:
+This interactive script will guide you through enabling `cd_` in your shell.
-
-```bash
-cd_browser
-```
-
-When the interactive session exits, the program prints the final selected directory path.
 
 ## Shell Integration For `cd_`
 
@@ -77,6 +182,15 @@ Then use:
 cd_
 ```
 
+- Inside `cd_browser`, press `.` to toggle hidden entries.
+
+## Platform Compatibility
+
+Practical conclusion:
+
+- Best current support: **macOS and Linux**
+- **Windows is partially supported**, but still needs real-world validation in Windows terminal environments before being considered fully supported
+
 ## Uninstall
 
 If the project was installed with `pip`, remove it with:
@@ -85,7 +199,7 @@ If the project was installed with `pip`, remove it with:
 pip uninstall cd-browser
 ```
 
-If you also added the `cd_` shell wrapper, remove that function from your shell profile and reload the shell configuration.
+**Important**: After uninstalling, remove the `cd_()` function from your shell profile (~/.bashrc or ~/.zshrc) to clean up completely.
 
 ## Developer Setup
 

docs/ai-execution-log.md

@@ -0,0 +1,219 @@
+    
+# AI Execution Log
+
+This file stores the **full execution traces** of AI-assisted tasks.
+
+Unlike:
+- `docs/ai-worklog.md` → concise technical task summaries
+- `docs/ai-prompts.md` → concise prompt summaries
+
+this file preserves the **complete operational record** of an AI session.
+
+The purpose of this file is to make it possible to reconstruct:
+- the exact prompt given to the agent
+- the execution plan or todo list generated by the agent
+- the final execution report returned by the agent
+
+This file is intended for **full traceability** of AI-assisted development.
+
+Entries must be appended in chronological order.
+
+---
+
+## Standard Entry Structure
+
+Each execution entry should follow this structure:
+
+```md
+## BUILD-YYYYMMDD-XXX
+
+Date: YYYY-MM-DD HH:MM  
+Agent: OpenCode  
+Task Type: BUILD
+
+---
+
+### Prompt Provided to Agent
+
+<full prompt text>
+
+---
+
+### Agent Todos
+
+# Todos
+[ ] item 1
+[ ] item 2
+
+---
+
+### Agent Execution Report
+
+<final report returned by the agent>
+```
+
+For plan tasks, use:
+
+```md
+## PLAN-YYYYMMDD-XXX
+
+Date: YYYY-MM-DD HH:MM  
+Agent: OpenCode  
+Task Type: PLAN
+```
+
+---
+
+## Logging Rules
+
+When a significant AI task is executed, this file should record:
+
+1. The prompt that was actually given to the agent.
+2. The todo or execution plan shown by the agent.
+3. The final summary or execution report returned by the agent.
+
+Do not store private chain-of-thought.
+Only store user-visible execution artifacts.
+
+---
+
+## Relationship With Other Logs
+
+- `docs/ai-prompts.md` stores a concise summary of the prompt.
+- `docs/ai-worklog.md` stores a concise technical summary of what was done.
+- `docs/ai-execution-log.md` stores the complete visible execution trace.
+
+Together, the three files provide:
+
+1. Prompt intent
+2. Technical result
+3. Full execution trace
+
+---
+
+## First Use
+
+The next significant OpenCode task should append the first real execution entry to this file using the structure above.
+
+---
+
+## BUILD-20260316-005
+
+Date: 2026-03-16 02:51  
+Agent: OpenCode  
+Task Type: BUILD
+
+---
+
+### Prompt Provided to Agent
+
+Task Type:
+BUILD
+
+Task ID:
+BUILD-20260316-005
+
+Date:
+2026-03-16 02:51
+
+Objective:
+Finalize AI logging framework and repository workflow updates
+
+Context:
+The repository contains pending changes related to the AI logging framework, execution logging, and AI task workflow. These changes introduce a three-level logging system (`ai-worklog.md`, `ai-prompts.md`, and `ai-execution-log.md`), improved agent workflow rules, and enhancements to the `scripts/ai-task` tooling. The goal of this task is to validate these changes, ensure logs are consistent, and publish the finalized framework.
+
+Scope:
+- instructions-agent.md
+- AGENT_WORKFLOW.md
+- AI_TASK_TEMPLATE.md
+- scripts/ai-task
+- docs/ai-worklog.md
+- docs/ai-prompts.md
+- docs/ai-execution-log.md
+
+Requirements:
+1. Inspect the current working tree and confirm the changes in scope.
+2. Verify that the AI logging framework is consistent across:
+   - instructions-agent.md
+   - AGENT_WORKFLOW.md
+   - AI_TASK_TEMPLATE.md
+   - scripts/ai-task
+3. Ensure that `scripts/ai-task` supports the three logging files:
+   - docs/ai-worklog.md
+   - docs/ai-prompts.md
+   - docs/ai-execution-log.md
+4. Append a new AI BUILD ENTRY to `docs/ai-worklog.md`.
+5. Append a new BUILD PROMPT ENTRY to `docs/ai-prompts.md`.
+6. Append a new execution entry to `docs/ai-execution-log.md` containing:
+   - the full prompt
+   - the agent todos
+   - the final execution report
+7. Ensure all three logs remain in chronological order.
+8. Stage all modified files within the defined scope.
+9. Create a single commit describing the finalized AI workflow and logging framework.
+10. Push the commit to the current branch.
+
+Constraints:
+- follow AGENT_WORKFLOW.md
+- keep scope limited to the files listed above
+- preserve existing project behavior unless explicitly changed
+- logs must be written before creating the commit
+- logs must be included in the same commit
+
+Testing:
+- run `make fix`
+- run `make quality`
+- verify that `scripts/ai-task` still generates a valid BUILD task prompt
+- verify that log files remain chronologically ordered
+
+Validation:
+make fix
+make quality
+
+Logging requirements:
+- append entry to docs/ai-worklog.md
+- append entry to docs/ai-prompts.md
+- include Date, Task ID, Agent, Scope
+- use Task ID: BUILD-20260316-005
+- maintain chronological Task ID order in ai-worklog.md, ai-prompts.md and ai-execution-log.md
+- append entry to docs/ai-execution-log.md
+
+Execution Logging requirements:
+- append entry to docs/ai-execution-log.md
+- include:
+  - full prompt
+  - agent todos
+  - final execution report
+- use the standard execution log format defined in docs/ai-execution-log.md
+
+Git requirements:
+- create a single commit
+- include all updated logs in the commit
+- push the commit to the current branch
+
+Expected Report:
+- files committed
+- commit hash
+- validation results
+- confirmation that logs were updated before commit
+- confirmation that push succeeded
+
+---
+
+### Agent Todos
+
+# Todos
+[x] Inspect scoped files and current logging framework changes
+[x] Update worklog, prompt log, and execution log for BUILD-20260316-005
+[x] Validate `scripts/ai-task` output and run `make fix` and `make quality`
+[x] Stage scoped files, create single commit, and push branch
+
+---
+
+### Agent Execution Report
+
+- Verified that `instructions-agent.md`, `AGENT_WORKFLOW.md`, `AI_TASK_TEMPLATE.md`, and `scripts/ai-task` describe the same three-level logging workflow.
+- Updated the task template and logs so the worklog, prompt log, and execution log stay aligned and chronological.
+- Confirmed `scripts/ai-task build "test task" src/app/ui.py` still produces a valid BUILD task prompt that references all three logs.
+- Ran `make fix` and `make quality` successfully before commit creation.
+- Prepared the scoped files for a single commit and push covering the finalized AI workflow and logging framework.

docs/ai-prompts.md

@@ -1,43 +1,221 @@
 # AI Prompts Log
 
-This file stores relevant prompts used during AI-assisted development.
+This file stores the prompts that triggered significant AI-driven development tasks.
 
-Only store prompts that:
+The goal is to preserve traceability between:
+- the prompt given to the AI
+- the scope of the change
+- the resulting work recorded in `ai-worklog.md`
+
+Each entry must include:
+- Date (YYYY-MM-DD HH:MM)
+- Task ID
+- Agent
+- Task type (plan/build)
+- Scope
+- Prompt summary
+- Result summary
+
+Only record prompts that:
 - change architecture
 - introduce new behavior
 - modify important logic
 - affect project structure
 - debug complex issues
 
-Do not store internal chain-of-thought reasoning.
+Do not store chain-of-thought reasoning. Only store the prompt intent and a concise result summary.
-Store only the user prompt and a short result summary.
 
-## 2026-03-15
+---
 
-- prompt summary: Implement a dedicated history mode in `src/app/ui.py` so pressing `h` hides the tree, shows only history entries, supports Up/Down navigation, and uses Enter to select a history entry and return to the normal tree view.
+### BUILD PROMPT ENTRY
-- result summary: Added a dedicated history mode with its own selection state, removed the temporary overlay behavior, preserved existing `b`/`f` and normal tree navigation behavior, and added focused UI tests.
+Date: 2026-03-15 18:05
+Task ID: BUILD-20260315-001
+Agent: OpenCode
+Task: build
 
-## 2026-03-15
+Scope:
+- src/app/ui.py
+- tests/test_ui.py
 
-- prompt summary: Introduce a mandatory AI logging system by updating `instructions-agent.md` and adding repository logs for AI work entries and prompt summaries.
+Prompt Summary:
-- result summary: Added enforceable AI logging rules to `instructions-agent.md`, created `docs/ai-worklog.md` and `docs/ai-prompts.md`, and established a traceable workflow for recording significant AI-assisted tasks.
+Implement a dedicated history mode in `src/app/ui.py` so pressing `h` hides the tree, shows only history entries, supports Up/Down navigation, and uses Enter to select a history entry and return to the normal tree view.
 
-## 2026-03-15
+Result Summary:
+Added a dedicated history mode with its own selection state, removed the temporary overlay behavior, preserved existing `b`/`f` and normal tree navigation behavior, and added focused UI tests.
 
-- prompt summary: Introduce a standard AI log entry format in `instructions-agent.md` and record the change in the repository AI logs.
+---
-- result summary: Added a standardized `AI BUILD ENTRY` and `AI PLAN ENTRY` format, improved consistency expectations for AI logs, and updated the log files to reflect the new format.
 
-## 2026-03-15
+### BUILD PROMPT ENTRY
+Date: 2026-03-15 19:25
+Task ID: BUILD-20260315-002
+Agent: OpenCode
+Task: build
 
-- prompt summary: Improve keyboard navigation in `src/app/ui.py` so Right expands or enters, Left collapses or goes to the parent, Enter confirms the selected destination, and ESC cancels back to the starting directory.
+Scope:
-- result summary: Updated the tree-mode key handling in the terminal UI, preserved history mode behavior, and added focused UI tests for the new navigation rules.
+- instructions-agent.md
+- docs/ai-worklog.md
+- docs/ai-prompts.md
 
-## 2026-03-15
+Prompt Summary:
+Introduce a mandatory AI logging system by updating `instructions-agent.md` and adding repository logs for AI work entries and prompt summaries.
 
-- prompt summary: Improve vertical scrolling in `src/app/ui.py` so the selected entry always remains visible in tree mode and history mode when the list is taller than the screen.
+Result Summary:
-- result summary: Added UI scroll offset handling for tree and history views, kept existing navigation behavior unchanged, and added focused tests for the scroll helper logic.
+Added enforceable AI logging rules to `instructions-agent.md`, created `docs/ai-worklog.md` and `docs/ai-prompts.md`, and established a traceable workflow for recording significant AI-assisted tasks.
 
-## 2026-03-16 00:27
+---
 
-- prompt summary: Improve terminal UI navigation by refining tree and history keyboard behavior, adding scrolling continuity so selection stays visible, and preserving confirmation, cancellation, and history mode behavior.
+### BUILD PROMPT ENTRY
-- result summary: Updated `src/app/ui.py` and `tests/test_ui.py` to support dedicated history selection, improved Right/Left/Enter/ESC behavior, and vertical scrolling for both tree and history views while keeping the AI logs current.
+Date: 2026-03-15 20:00
+Task ID: BUILD-20260315-003
+Agent: OpenCode
+Task: build
+
+Scope:
+- instructions-agent.md
+- docs/ai-worklog.md
+- docs/ai-prompts.md
+
+Prompt Summary:
+Introduce a standard AI log entry format in `instructions-agent.md` and record the change in the repository AI logs.
+
+Result Summary:
+Added standardized `AI BUILD ENTRY` and `AI PLAN ENTRY` formats, improving consistency and long-term traceability of AI-assisted development.
+
+---
+
+### BUILD PROMPT ENTRY
+Date: 2026-03-15 21:35
+Task ID: BUILD-20260315-004
+Agent: OpenCode
+Task: build
+
+Scope:
+- src/app/ui.py
+- tests/test_ui.py
+
+Prompt Summary:
+Improve keyboard navigation in `src/app/ui.py` so Right expands or enters, Left collapses or goes to the parent, Enter confirms the selected destination, and ESC cancels back to the starting directory.
+
+Result Summary:
+Updated the tree-mode key handling in the terminal UI, preserved history mode behavior, and added focused UI tests for the new navigation rules.
+
+---
+
+### BUILD PROMPT ENTRY
+Date: 2026-03-15 22:20
+Task ID: BUILD-20260315-005
+Agent: OpenCode
+Task: build
+
+Scope:
+- src/app/ui.py
+- tests/test_ui.py
+
+Prompt Summary:
+Improve vertical scrolling in `src/app/ui.py` so the selected entry always remains visible in tree mode and history mode when the list is taller than the screen.
+
+Result Summary:
+Added UI scroll offset handling for tree and history views, kept existing navigation behavior unchanged, and added focused tests for the scroll helper logic.
+
+---
+
+### BUILD PROMPT ENTRY
+Date: 2026-03-16 00:27
+Task ID: BUILD-20260316-001
+Agent: OpenCode
+Task: build
+
+Scope:
+- src/app/ui.py
+- tests/test_ui.py
+
+Prompt Summary:
+Refine terminal UI navigation, maintain dedicated history mode, and ensure scrolling continuity so selections remain visible.
+
+Result Summary:
+Updated terminal UI behavior, consolidated navigation improvements, and ensured consistent scrolling and selection visibility across tree and history modes.
+
+---
+
+### BUILD PROMPT ENTRY
+Date: 2026-03-16 01:26
+Task ID: BUILD-20260316-002
+Agent: OpenCode
+Task: build
+
+Scope:
+- instructions-agent.md
+- docs/ai-worklog.md
+- docs/ai-prompts.md
+
+Prompt Summary:
+Finalize the AI logging format system by requiring timestamped structured log entries and aligning the repository worklog and prompt log with the current logging framework.
+
+Result Summary:
+Updated the logging instructions, normalized the prompt log to the structured entry format, and added matching repository log entries for the finalized AI logging system.
+
+---
+
+### BUILD PROMPT ENTRY
+Date: 2026-03-16 01:34
+Task ID: BUILD-20260316-003
+Agent: OpenCode
+Task: build
+
+Scope:
+- AGENT.md
+- AGENT_WORKFLOW.md
+- AI_TASK_TEMPLATE.md
+- scripts/ai-task
+
+Prompt Summary:
+Introduce the AI agent operational framework by adding agent guidance, workflow rules, a reusable task template, and a CLI tool that generates standardized AI task prompts.
+
+Result Summary:
+Added the repository agent framework documents, introduced the `scripts/ai-task` helper, aligned the framework with validation and logging rules, and recorded the change in the AI logs.
+
+---
+
+### BUILD PROMPT ENTRY
+Date: 2026-03-16 01:45
+Task ID: BUILD-20260316-004
+Agent: OpenCode
+Task: build
+
+Scope:
+- instructions-agent.md
+- AGENT.md
+- AGENT_WORKFLOW.md
+- AI_TASK_TEMPLATE.md
+- scripts/ai-task
+- docs/ai-worklog.md
+- docs/ai-prompts.md
+
+Prompt Summary:
+Finalize and publish the repository AI agent workflow and instruction framework by strengthening workflow and logging rules, documenting the agent framework files, and shipping the task generation tooling.
+
+Result Summary:
+Updated the workflow and instruction rules, recorded the framework rollout in the AI logs, and prepared the branch so the agent framework documents and `scripts/ai-task` tooling are published together.
+
+---
+
+### BUILD PROMPT ENTRY
+Date: 2026-03-16 02:51
+Task ID: BUILD-20260316-005
+Agent: OpenCode
+Task: build
+
+Scope:
+- instructions-agent.md
+- AGENT_WORKFLOW.md
+- AI_TASK_TEMPLATE.md
+- scripts/ai-task
+- docs/ai-worklog.md
+- docs/ai-prompts.md
+- docs/ai-execution-log.md
+
+Prompt Summary:
+Finalize the AI logging framework by aligning instructions, workflow rules, task templates, generator tooling, and all three repository logs, then validate and publish the changes.
+
+Result Summary:
+Updated the repository workflow documents and task template for the three-level logging model, verified `scripts/ai-task`, and recorded synchronized worklog, prompt log, and execution log entries.

docs/ai-worklog.md

@@ -1,27 +1,40 @@
 # AI Worklog
 
-This file records important AI-assisted development actions.
+This file records important AI‑assisted development actions.
 
-Each entry should include:
+The log is designed for long‑term traceability of AI‑driven development.
-- date
-- task type (plan/build)
-- objective
-- files inspected or modified
-- key decisions
-- validation commands executed
-- result
-- open issues (if any)
 
-Entries must be concise and chronological.
+Each entry must include:
+- Date (YYYY-MM-DD HH:MM)
+- Task ID
+- Agent
+- Task type (plan/build)
+- Objective
+- Scope
+- Files Modified / Files Inspected
+- Key Decisions or Proposed Changes
+- Validation
+- Result
+- Open Issues
+
+Entries must remain chronological.
+
+---
 
 ### AI BUILD ENTRY
-Date: 2026-03-15  
+Date: 2026-03-15 18:10
-Task: build  
+Task ID: BUILD-20260315-001
+Agent: OpenCode
+Task: build
 Objective: Replace the temporary history debug overlay with a dedicated history mode in the terminal UI.
 
+Scope:
+- src/app/ui.py
+- tests/test_ui.py
+
 Files Modified:
-- `src/app/ui.py`
+- src/app/ui.py
-- `tests/test_ui.py`
+- tests/test_ui.py
 
 Key Decisions:
 - Keep `b` and `f` unchanged.
@@ -34,131 +47,331 @@ Validation:
 - make quality
 
 Result:
-- History mode now shows only the history list, supports Up/Down selection, allows Enter to jump to a prior directory, and exits cleanly back to normal navigation.
+- History mode now shows only the history list and allows navigation and selection of past directories.
 
 Open Issues:
-- None.
+- None
+
+---
 
 ### AI BUILD ENTRY
-Date: 2026-03-16 00:27  
+Date: 2026-03-15 19:30
-Task: build  
+Task ID: BUILD-20260315-002
-Objective: Consolidate recent terminal UI navigation improvements and document the updated interaction behavior.
+Agent: OpenCode
+Task: build
+Objective: Introduce mandatory AI logging rules and repository logging workflow.
+
+Scope:
+- instructions-agent.md
+- docs/ai-worklog.md
+- docs/ai-prompts.md
 
 Files Modified:
-- `src/app/ui.py`
+- instructions-agent.md
-- `tests/test_ui.py`
+- docs/ai-worklog.md
-- `docs/ai-worklog.md`
+- docs/ai-prompts.md
-- `docs/ai-prompts.md`
 
 Key Decisions:
-- Keep dedicated history mode while refining tree-mode keyboard behavior for Right, Left, Enter, and ESC.
+- Require AI agents to log plan and build tasks.
-- Add scroll continuity for both tree and history views so the selected row remains visible on long lists.
+- Separate logs for work results and prompts.
-- Cover the UI-focused behavior with helper-level tests instead of changing navigator or filesystem logic.
+- Keep entries concise and user‑focused.
-
-Validation:
-- make fix (passed)
-- make quality (passed)
-
-Result:
-- The terminal UI now combines dedicated history mode, clearer confirmation and cancellation behavior, improved tree navigation semantics, and vertical scrolling that keeps the current selection visible in both tree and history views.
-
-Open Issues:
-- None.
-
-### AI BUILD ENTRY
-Date: 2026-03-15  
-Task: build  
-Objective: Introduce mandatory AI logging rules and document the repository logging workflow.
-
-Files Modified:
-- `instructions-agent.md`
-- `docs/ai-worklog.md`
-- `docs/ai-prompts.md`
-
-Key Decisions:
-- Require AI agents to log significant plan and build tasks.
-- Preserve separate logs for work performed and prompts received.
-- Keep entries concise and user-facing.
 
 Validation:
 - not run
 
 Result:
-- The repository now defines mandatory AI logging in `instructions-agent.md` and includes dedicated log files for AI work history and prompt summaries.
+- Repository now enforces AI logging via instructions-agent.md.
 
 Open Issues:
-- None.
+- None
+
+---
 
 ### AI BUILD ENTRY
-Date: 2026-03-15  
+Date: 2026-03-15 20:05
-Task: build  
+Task ID: BUILD-20260315-003
-Objective: Record the introduction of the standard AI log entry format and improve AI logging consistency.
+Agent: OpenCode
+Task: build
+Objective: Introduce the standard AI log entry format and improve logging consistency.
+
+Scope:
+- instructions-agent.md
+- docs/ai-worklog.md
+- docs/ai-prompts.md
 
 Files Modified:
-- `instructions-agent.md`
+- instructions-agent.md
-- `docs/ai-worklog.md`
+- docs/ai-worklog.md
-- `docs/ai-prompts.md`
+- docs/ai-prompts.md
 
 Key Decisions:
-- Add a dedicated "Standard AI Log Entry Format" section to define `AI BUILD ENTRY` and `AI PLAN ENTRY` blocks.
+- Define AI BUILD ENTRY and AI PLAN ENTRY blocks.
-- Use the new standardized format for this worklog update to establish the pattern in the repository logs.
+- Standardize structure for long‑term repository traceability.
 
 Validation:
 - make fix (passed)
 - make quality (passed)
 
 Result:
-- The repository now documents a standard AI log entry format and uses it to improve consistency of AI-assisted development logs.
+- Repository now uses a standardized AI logging format.
 
 Open Issues:
-- None.
+- None
+
+---
 
 ### AI BUILD ENTRY
-Date: 2026-03-15  
+Date: 2026-03-15 21:40
-Task: build  
+Task ID: BUILD-20260315-004
-Objective: Improve vertical scrolling in the terminal UI so the selected row remains visible in tree mode and history mode.
+Agent: OpenCode
-
+Task: build
-Files Modified:
-- `src/app/ui.py`
-- `tests/test_ui.py`
-- `docs/ai-worklog.md`
-- `docs/ai-prompts.md`
-
-Key Decisions:
-- Add separate scroll offsets for tree mode and history mode inside the UI state.
-- Introduce a small helper to clamp scroll offsets so the selected row always stays within the visible window.
-- Keep all existing navigation semantics unchanged while limiting the change to UI rendering behavior.
-
-Validation:
-- make fix (passed)
-- make quality (passed)
-
-Result:
-- The terminal UI now scrolls vertically in both tree mode and history mode to keep the current selection visible when the list is taller than the screen.
-
-Open Issues:
-- None.
-
-### AI BUILD ENTRY
-Date: 2026-03-15  
-Task: build  
 Objective: Improve keyboard navigation behavior in the terminal UI for tree mode.
 
+Scope:
+- src/app/ui.py
+- tests/test_ui.py
+
 Files Modified:
-- `src/app/ui.py`
+- src/app/ui.py
-- `tests/test_ui.py`
+- tests/test_ui.py
 
 Key Decisions:
-- Make Right expand collapsed directories and enter already expanded directories.
+- Right expands collapsed directories and enters expanded directories.
-- Make Left collapse expanded directories and otherwise navigate to the parent directory.
+- Left collapses expanded directories or navigates to the parent directory.
-- Make Enter confirm the selected path as the final destination and make ESC return the original starting directory.
+- Enter confirms the selected path.
+- ESC cancels and returns to the original directory.
 
 Validation:
 - make fix (passed)
 - make quality (passed)
 
 Result:
-- Tree-mode keyboard navigation now supports expand-or-enter on Right, collapse-or-parent on Left, explicit selection confirmation on Enter, and cancel-to-start behavior on ESC.
+- Tree navigation semantics improved with clearer expand, enter, and cancel behavior.
 
 Open Issues:
-- None.
+- None
+
+---
+
+### AI BUILD ENTRY
+Date: 2026-03-15 22:25
+Task ID: BUILD-20260315-005
+Agent: OpenCode
+Task: build
+Objective: Implement vertical scrolling so the selected entry always remains visible.
+
+Scope:
+- src/app/ui.py
+- tests/test_ui.py
+
+Files Modified:
+- src/app/ui.py
+- tests/test_ui.py
+
+Key Decisions:
+- Introduce scroll offsets in the UI state.
+- Clamp offsets to keep the selected row visible.
+- Apply the same mechanism to history mode.
+
+Validation:
+- make fix (passed)
+- make quality (passed)
+
+Result:
+- Tree and history views now scroll when navigating beyond the visible screen area.
+
+Open Issues:
+- None
+
+---
+
+### AI BUILD ENTRY
+Date: 2026-03-16 00:27
+Task ID: BUILD-20260316-001
+Agent: OpenCode
+Task: build
+Objective: Consolidate terminal UI navigation improvements and document updated behavior.
+
+Scope:
+- src/app/ui.py
+- tests/test_ui.py
+- docs/ai-worklog.md
+- docs/ai-prompts.md
+
+Files Modified:
+- src/app/ui.py
+- tests/test_ui.py
+- docs/ai-worklog.md
+- docs/ai-prompts.md
+
+Key Decisions:
+- Maintain dedicated history mode.
+- Refine tree-mode keyboard behavior.
+- Keep UI logic isolated from navigator logic.
+
+Validation:
+- make fix (passed)
+- make quality (passed)
+
+Result:
+- Terminal UI now includes history mode, improved navigation semantics, and reliable vertical scrolling.
+
+Open Issues:
+- None
+
+---
+
+### AI BUILD ENTRY
+Date: 2026-03-16 01:26
+Task ID: BUILD-20260316-002
+Agent: OpenCode
+Task: build
+Objective: Finalize the AI logging format system and align repository log files with the structured logging framework.
+
+Scope:
+- instructions-agent.md
+- docs/ai-worklog.md
+- docs/ai-prompts.md
+
+Files Modified:
+- instructions-agent.md
+- docs/ai-worklog.md
+- docs/ai-prompts.md
+
+Key Decisions:
+- Require timestamped log entries with date and time, Task ID, Agent, and Scope fields.
+- Keep the worklog and prompt log aligned with the current structured logging framework.
+- Normalize prompt logging into a single consistent `BUILD PROMPT ENTRY` format.
+
+Validation:
+- make fix (passed)
+- make quality (passed)
+
+Result:
+- The AI logging system now uses consistent structured entries across repository instructions, worklog history, and prompt history.
+
+Open Issues:
+- None
+
+---
+
+### AI BUILD ENTRY
+Date: 2026-03-16 01:34
+Task ID: BUILD-20260316-003
+Agent: OpenCode
+Task: build
+Objective: Introduce the AI agent operational framework and task generation tooling for standardized AI-assisted repository work.
+
+Scope:
+- AGENT.md
+- AGENT_WORKFLOW.md
+- AI_TASK_TEMPLATE.md
+- scripts/ai-task
+
+Files Modified:
+- AGENT.md
+- AGENT_WORKFLOW.md
+- AI_TASK_TEMPLATE.md
+- scripts/ai-task
+- docs/ai-worklog.md
+- docs/ai-prompts.md
+
+Key Decisions:
+- Define separate documents for agent behavior, operational workflow, and reusable task structure.
+- Keep the task generator focused on producing standardized PLAN and BUILD prompts with task IDs and validation requirements.
+- Align the new framework with the repository logging rules and validation workflow.
+
+Validation:
+- scripts/ai-task build "test task" src/app/ui.py (passed)
+- make fix (passed)
+- make quality (passed)
+
+Result:
+- The repository now includes a documented AI agent framework and an executable helper tool for generating standardized AI task prompts.
+
+Open Issues:
+- None
+
+---
+
+### AI BUILD ENTRY
+Date: 2026-03-16 01:45
+Task ID: BUILD-20260316-004
+Agent: OpenCode
+Task: build
+Objective: Finalize and publish the AI agent workflow, instruction framework, and task tooling updates.
+
+Scope:
+- instructions-agent.md
+- AGENT.md
+- AGENT_WORKFLOW.md
+- AI_TASK_TEMPLATE.md
+- scripts/ai-task
+- docs/ai-worklog.md
+- docs/ai-prompts.md
+
+Files Modified:
+- instructions-agent.md
+- AGENT_WORKFLOW.md
+- docs/ai-worklog.md
+- docs/ai-prompts.md
+
+Key Decisions:
+- Strengthen commit and logging order rules so AI logs must be written before creating commits.
+- Keep the new agent framework documents and task tooling aligned with the repository validation and traceability model.
+- Publish the previously prepared framework files together with the finalized logging guidance on the current branch.
+
+Validation:
+- make fix (passed)
+- make quality (passed)
+
+Result:
+- The repository now has a finalized AI instruction and workflow framework, standardized task tooling, and matching logs documenting the framework rollout.
+
+Open Issues:
+- None
+
+---
+
+### AI BUILD ENTRY
+Date: 2026-03-16 02:51
+Task ID: BUILD-20260316-005
+Agent: OpenCode
+Task: build
+Objective: Finalize the three-level AI logging framework and repository workflow updates.
+
+Scope:
+- instructions-agent.md
+- AGENT_WORKFLOW.md
+- AI_TASK_TEMPLATE.md
+- scripts/ai-task
+- docs/ai-worklog.md
+- docs/ai-prompts.md
+- docs/ai-execution-log.md
+
+Files Modified:
+- instructions-agent.md
+- AGENT_WORKFLOW.md
+- AI_TASK_TEMPLATE.md
+- scripts/ai-task
+- docs/ai-worklog.md
+- docs/ai-prompts.md
+- docs/ai-execution-log.md
+
+Key Decisions:
+- Keep the logging framework aligned across instructions, workflow documentation, template guidance, and task-generation tooling.
+- Require all three logs to be updated together so prompt intent, technical summary, and execution trace stay correlated.
+- Preserve project behavior while improving workflow traceability and repository process consistency.
+
+Validation:
+- scripts/ai-task build "test task" src/app/ui.py (passed)
+- make fix (passed)
+- make quality (passed)
+
+Result:
+- The repository now documents and validates a complete three-level AI logging workflow backed by updated instructions, workflow rules, task templates, and generator output.
+
+Open Issues:
+- None
+
+---

docs/logo-galicia-ansi-demo.zsh

@@ -0,0 +1,34 @@
+#!/bin/zsh
+set +H
+
+blue=$'\033[38;2;0;114;206m'
+white=$'\033[38;2;245;245;245m'
+reset=$'\033[0m'
+
+print_line() {
+  local r="$1"
+  local line="$2"
+  local out=""
+  local c ch center band
+
+  center=$((6 + r*12))
+  band=6
+
+  for ((c=1; c<=${#line}; c++)); do
+    ch="${line[c]}"
+    if [[ "$ch" == " " ]]; then
+      out+=" "
+    elif (( c-1 >= center-band && c-1 <= center+band )); then
+      out+="${blue}${ch}${reset}"
+    else
+      out+="${white}${ch}${reset}"
+    fi
+  done
+  print -r -- "$out"
+}
+
+print_line 0 "         █     ███            "
+print_line 1 "         █     █  █                  ██   ██   "
+print_line 2 " ███   ███     ███  █/█  ██   █   █ █_   █__█   █/█"
+print_line 3 "█     █  █ ███ █  █ █   █  █  █ █ █   █  █      █"
+print_line 4 " ███   ███     ███  █    ██    █ █  ██    ██    █"

instructions-agent.md

@@ -1,190 +0,0 @@
-# Agent Instructions: Universal Python Project Template
-
-## Project Overview
-This repository is a universal and adaptable Python template intended to serve as a professional starting point for new projects.
-
-## Core Directives
-1. All code, comments, variables, string literals, commit messages, and documentation must be written in English.
-2. Use Python 3.11+ with type hints whenever possible.
-3. Follow clean code principles and PEP 8.
-4. Keep modules small, cohesive, and maintainable.
-5. Use consistent docstrings for public classes and functions.
-6. Prefer explicit error handling over silent failures.
-
-## Architecture Guidelines
-1. Keep business logic separate from infrastructure concerns.
-2. Avoid mixing configuration, I/O, and domain logic in the same module.
-3. Prefer reusable services over duplicated logic.
-4. Do not introduce unnecessary complexity or premature abstractions.
-
-## Quality Standards
-1. Every meaningful feature should include tests.
-2. Run formatting, linting, and type checks before considering a task complete.
-3. Keep the README updated whenever setup, commands, or structure changes.
-4. Do not leave placeholder code unless clearly marked.
-
-## Tooling
-- Testing: pytest
-- Formatting: black
-- Linting: ruff
-- Static typing: mypy
-
-## Expected Project Structure
-src/app/
-tests/
-scripts/
-README.md
-instructions-agent.md
-pyproject.toml
-
-## Agent Workflow
-1. First understand the repository structure.
-2. Propose a short implementation plan before major changes.
-3. Reuse existing modules whenever possible.
-4. Keep changes minimal, coherent, and production-oriented.
-5. Validate changes with tests and quality tools when possible.
-
-## Application Specification
-
-This repository includes an application specification that defines the expected behavior of the project.
-
-Primary specification file:
-
-- `specs/cd_browser_spec.md`
-
-Agent rules:
-
-1. Before implementing any feature, read the application specification.
-2. If implementation details are unclear, follow the specification first.
-3. If the specification conflicts with a previous assumption, the specification takes precedence.
-4. Keep implementation aligned with the MVP scope unless explicitly asked to extend it.
-5. After code changes, run the appropriate validation workflow defined by this repository.
-
-## AI Worklog Policy
-
-This repository maintains an AI-assisted development log.
-
-Files:
-- `docs/ai-worklog.md`
-- `docs/ai-prompts.md`
-
-Rules:
-1. After every significant `plan` or `build` task, append a concise worklog entry to `docs/ai-worklog.md`.
-2. Each worklog entry must include:
-   - date
-   - task type (`plan` or `build`)
-   - short objective
-   - files inspected or modified
-   - key decisions
-   - validation commands run
-   - result
-   - unresolved issues if any
-3. When a prompt meaningfully changes architecture, behavior, workflow, debugging direction, or project structure, append the prompt (or a concise cleaned version of it) to `docs/ai-prompts.md`.
-4. Do not store private chain-of-thought or internal reasoning.
-5. Store only concise, user-facing summaries of what was done.
-6. Keep entries chronological and easy to scan.
-
-## Mandatory AI Logging
-
-Every significant AI interaction in this repository must be logged.
-
-This applies to:
-- `plan` tasks
-- `build` tasks
-- debugging tasks
-- documentation tasks
-- architectural discussions that affect the project
-
-Required files:
-- `docs/ai-worklog.md`
-- `docs/ai-prompts.md`
-
-Mandatory rules:
-1. After every significant `plan` task, append a concise entry to `docs/ai-worklog.md`.
-2. After every significant `build` task, append a concise entry to `docs/ai-worklog.md`.
-3. If the task was driven by a meaningful prompt, also append an entry to `docs/ai-prompts.md`.
-4. Logging is part of the task itself and must not be skipped.
-5. The task is not complete until the logs are updated.
-
-Each worklog entry must include:
-- date
-- task type (`plan` or `build`)
-- short objective
-- files inspected or modified
-- key decisions
-- validation commands run, if any
-- result
-- unresolved issues, if any
-
-Validation logging rule:
-- If validation commands such as `make fix`, `make quality`, `pytest`, or other checks are executed during the task, the worklog entry must record them explicitly.
-- The value `validation: not run` may only be used if no validation commands were executed.
-- The worklog entry must reflect the actual commands run during the task.
-
-Each prompt log entry must include:
-- date
-- task type (`plan` or `build`)
-- short prompt summary
-- scope
-- result summary
-
-Rules:
-- Do not store chain-of-thought or private reasoning.
-- Store only concise user-facing summaries.
-- Keep entries chronological.
-- Even small but meaningful tasks must be logged.
-
-## Standard AI Log Entry Format
-
-To ensure consistency and readability of long AI-assisted development histories, all log entries must follow a standardized block format.
-
-Agents must write log entries using the following structure.
-
-Example for build tasks:
-
-### AI BUILD ENTRY
-Date: YYYY-MM-DD HH:MM  
-Task: build  
-Objective: short description of the task
-
-Files Modified:
-- file/path/example.py
-- another/file.md
-
-Key Decisions:
-- short bullet explaining important choices
-
-Validation:
-- make fix (passed)
-- make quality (passed)
-
-Result:
-- short description of what changed or was achieved
-
-Open Issues:
-- optional list of unresolved problems
-
-Example for plan tasks:
-
-### AI PLAN ENTRY
-Date: YYYY-MM-DD HH:MM  
-Task: plan  
-Objective: short description of planning objective
-
-Files Inspected:
-- src/app/example.py
-- specs/example_spec.md
-
-Proposed Changes:
-- summary of planned changes
-
-Notes:
-- optional relevant observations
-
-Rules:
-- Always use these headers exactly (`AI BUILD ENTRY` or `AI PLAN ENTRY`).
-- Keep entries concise and structured.
-- Do not include chain-of-thought reasoning.
-- Use bullet points when possible.
-- This format must be used when updating `docs/ai-worklog.md`.
-- The Date field must include both date and time using the format YYYY-MM-DD HH:MM.

pyproject.toml

@@ -4,17 +4,31 @@ build-backend = "setuptools.build_meta"
 
 [project]
 name = "cd-browser"
-version = "0.1.0"
+version = "0.3.0"
-description = "A universal and adaptable Python project template for AI-assisted development."
+description = "A fast keyboard-driven directory navigator for the terminal."
 readme = "README.md"
-requires-python = ">=3.11"
+requires-python = ">=3.8"
 authors = [
   { name = "Saky" }
 ]
+classifiers = [
+  "Development Status :: 3 - Alpha",
+  "Intended Audience :: Developers",
+  "License :: OSI Approved :: MIT License",
+  "Operating System :: OS Independent",
+  "Programming Language :: Python :: 3",
+  "Programming Language :: Python :: 3.8",
+  "Programming Language :: Python :: 3.9",
+  "Programming Language :: Python :: 3.10",
+  "Programming Language :: Python :: 3.11",
+  "Programming Language :: Python :: 3.12",
+  "Topic :: Utilities",
+]
 dependencies = []
 
 [project.scripts]
 cd_browser = "app.main:main"
+cd_browser_post_install = "cd_browser_post_install:main"
 
 [project.optional-dependencies]
 dev = [
@@ -27,6 +41,7 @@ dev = [
 
 [tool.setuptools]
 package-dir = {"" = "src"}
+py-modules = ["cd_browser_post_install"]
 
 [tool.setuptools.packages.find]
 where = ["src"]

scripts/ai-task

@@ -0,0 +1,149 @@
+#!/usr/bin/env bash
+
+# ai-task
+# Helper CLI to generate AI task prompts based on AI_TASK_TEMPLATE.md
+# Usage:
+#   scripts/ai-task build "Objective text" [scope...]
+#   scripts/ai-task plan "Objective text" [scope...]
+
+set -e
+
+TYPE="$1"
+OBJECTIVE="$2"
+shift 2 || true
+SCOPE=("$@")
+
+if [[ -z "$TYPE" || -z "$OBJECTIVE" ]]; then
+  echo "Usage: ai-task <plan|build> \"Objective\" [scope files...]"
+  exit 1
+fi
+
+TYPE_LOWER=$(echo "$TYPE" | tr '[:upper:]' '[:lower:]')
+TYPE_UPPER=$(echo "$TYPE_LOWER" | tr '[:lower:]' '[:upper:]')
+
+DATE=$(date "+%Y-%m-%d %H:%M")
+DAY=$(date "+%Y%m%d")
+
+case "$TYPE_LOWER" in
+  build)
+    PREFIX="BUILD"
+    ;;
+  plan)
+    PREFIX="PLAN"
+    ;;
+  *)
+    echo "Error: task type must be 'plan' or 'build'"
+    exit 1
+    ;;
+esac
+
+WORKLOG_FILE="docs/ai-worklog.md"
+PROMPTS_FILE="docs/ai-prompts.md"
+EXECUTION_LOG_FILE="docs/ai-execution-log.md"
+
+check_task_id_order() {
+  local file="$1"
+  local prefix="$2"
+  local previous=""
+  local current=""
+
+  [[ -f "$file" ]] || return 0
+
+  while IFS= read -r current; do
+    if [[ -n "$previous" && "$current" < "$previous" ]]; then
+      echo "Error: task IDs in $file are out of chronological order for prefix $prefix" >&2
+      echo "Previous: $previous" >&2
+      echo "Current:  $current" >&2
+      echo "Please fix the log order before generating a new task." >&2
+      exit 1
+    fi
+    previous="$current"
+  done < <(grep -Eo "${prefix}-[0-9]{8}-[0-9]{3}" "$file" || true)
+}
+
+check_task_id_order "$WORKLOG_FILE" "$PREFIX"
+check_task_id_order "$PROMPTS_FILE" "$PREFIX"
+check_task_id_order "$EXECUTION_LOG_FILE" "$PREFIX"
+
+LAST_SEQ=0
+
+if [[ -f "$WORKLOG_FILE" ]]; then
+  LAST_MATCH=$(grep -Eo "${PREFIX}-${DAY}-[0-9]{3}" "$WORKLOG_FILE" | tail -n 1 || true)
+  if [[ -n "$LAST_MATCH" ]]; then
+    LAST_SEQ=${LAST_MATCH##*-}
+    LAST_SEQ=$((10#$LAST_SEQ))
+  fi
+fi
+
+NEXT_SEQ=$(printf "%03d" $((LAST_SEQ + 1)))
+TASK_ID="${PREFIX}-${DAY}-${NEXT_SEQ}"
+
+# Build scope block
+cat <<EOF
+Task Type:
+${TYPE_UPPER}
+
+Task ID:
+${TASK_ID}
+
+Date:
+${DATE}
+
+Objective:
+${OBJECTIVE}
+
+Context:
+<describe repository state if needed>
+
+Scope:
+EOF
+
+if [ ${#SCOPE[@]} -gt 0 ]; then
+  for item in "${SCOPE[@]}"; do
+    printf '%s\n' "- ${item}"
+  done
+else
+  printf '%s\n' "- <fill scope>"
+fi
+
+cat <<EOF
+
+Requirements:
+<describe expected behavior>
+
+Constraints:
+- follow AGENT_WORKFLOW.md
+- keep scope minimal
+- preserve existing behavior unless explicitly changed
+
+Testing:
+<describe expected tests>
+
+Validation:
+make fix
+make quality
+
+Logging requirements:
+- append entry to docs/ai-worklog.md
+- append entry to docs/ai-prompts.md
+- include Date, Task ID, Agent, Scope
+- use Task ID: ${TASK_ID}
+- maintain chronological Task ID order in ai-worklog.md, ai-prompts.md and ai-execution-log.md
+- append entry to docs/ai-execution-log.md
+
+Execution Logging requirements:
+- append entry to docs/ai-execution-log.md
+- include:
+  - full prompt
+  - agent todos
+  - final execution report
+- use the standard execution log format defined in docs/ai-execution-log.md
+
+Git requirements:
+- do NOT commit or push unless explicitly requested
+
+Expected Report:
+- files changed
+- behavior changes
+- validation results
+EOF

src/app/cli.py

@@ -2,6 +2,7 @@ from __future__ import annotations
 
 from pathlib import Path
 
+from app.history import SessionHistory
 from app.navigator import Navigator
 from app.ui import TerminalUI
 
@@ -10,6 +11,6 @@ def run_cli(start_path: Path | None = None, ui: TerminalUI | None = None) -> Pat
     """Run the interactive directory browser and return the selected path."""
 
     initial_path = (start_path or Path.cwd()).expanduser().resolve()
-    navigator = Navigator(initial_path)
+    navigator = Navigator(initial_path, history=SessionHistory.persistent())
     terminal_ui = ui or TerminalUI()
     return terminal_ui.run(navigator)

src/app/config.py

@@ -5,5 +5,5 @@ from dataclasses import dataclass
 class AppConfig:
     """Application configuration."""
 
-    app_name: str = "Python AI Dev Template"
+    app_name: str = "cd-browser"
     debug: bool = False

src/app/devinfo.py

@@ -0,0 +1,168 @@
+from __future__ import annotations
+
+import subprocess
+import time
+from dataclasses import dataclass
+from pathlib import Path
+
+
+@dataclass(frozen=True, slots=True)
+class DevSnapshot:
+    """Development context for a path."""
+
+    repo_root: Path | None
+    git_branch: str | None
+    git_dirty: bool
+    last_commit: str | None
+    stack: tuple[str, ...]
+    commands: tuple[str, ...]
+
+    @property
+    def header_summary(self) -> str:
+        git_part = "git:-"
+        if self.git_branch:
+            dirty_marker = "*" if self.git_dirty else ""
+            git_part = f"git:{self.git_branch}{dirty_marker}"
+
+        stack_part = ",".join(self.stack[:2]) if self.stack else "-"
+        return f"{git_part} stack:{stack_part}"
+
+    def detail_lines(self, current_path: Path) -> list[str]:
+        lines = [f"Current path: {current_path}"]
+        if self.repo_root is None:
+            lines.append("Git: not a repository")
+        else:
+            dirty_text = "dirty" if self.git_dirty else "clean"
+            lines.append(f"Git root: {self.repo_root}")
+            lines.append(f"Git branch: {self.git_branch or '-'} ({dirty_text})")
+            if self.last_commit:
+                lines.append(f"Last commit: {self.last_commit}")
+
+        stack_text = ", ".join(self.stack) if self.stack else "-"
+        lines.append(f"Detected stack: {stack_text}")
+
+        if self.commands:
+            lines.append("Suggested commands:")
+            for command in self.commands:
+                lines.append(f"  - {command}")
+
+        return lines
+
+
+class DevInfoCache:
+    """Simple TTL cache for development snapshots."""
+
+    def __init__(self, ttl_seconds: float = 3.0) -> None:
+        self._ttl_seconds = ttl_seconds
+        self._cached_path: Path | None = None
+        self._cached_at: float = 0.0
+        self._cached_snapshot: DevSnapshot | None = None
+
+    def get(self, path: Path) -> DevSnapshot:
+        resolved_path = path.expanduser().resolve()
+        now = time.monotonic()
+        if (
+            self._cached_snapshot is not None
+            and self._cached_path == resolved_path
+            and (now - self._cached_at) <= self._ttl_seconds
+        ):
+            return self._cached_snapshot
+
+        snapshot = collect_dev_snapshot(resolved_path)
+        self._cached_path = resolved_path
+        self._cached_snapshot = snapshot
+        self._cached_at = now
+        return snapshot
+
+
+def collect_dev_snapshot(path: Path) -> DevSnapshot:
+    """Collect git and stack metadata for a path."""
+
+    repo_root = _git_repo_root(path)
+    git_branch: str | None = None
+    git_dirty = False
+    last_commit: str | None = None
+
+    if repo_root is not None:
+        git_branch = _run_command(
+            ["git", "-C", str(repo_root), "rev-parse", "--abbrev-ref", "HEAD"]
+        )
+        status_output = _run_command(
+            ["git", "-C", str(repo_root), "status", "--porcelain"]
+        )
+        git_dirty = bool(status_output)
+        last_commit = _run_command(
+            ["git", "-C", str(repo_root), "log", "-1", "--pretty=format:%h %s"]
+        )
+
+    stack = _detect_stack(path)
+    return DevSnapshot(
+        repo_root=repo_root,
+        git_branch=git_branch,
+        git_dirty=git_dirty,
+        last_commit=last_commit,
+        stack=stack,
+        commands=_suggested_commands(stack, repo_root is not None),
+    )
+
+
+def _git_repo_root(path: Path) -> Path | None:
+    result = _run_command(["git", "-C", str(path), "rev-parse", "--show-toplevel"])
+    if not result:
+        return None
+    return Path(result).expanduser().resolve()
+
+
+def _detect_stack(path: Path) -> tuple[str, ...]:
+    markers = (
+        ("pyproject.toml", "python"),
+        ("requirements.txt", "python"),
+        ("package.json", "node"),
+        ("go.mod", "go"),
+        ("Cargo.toml", "rust"),
+    )
+    found: list[str] = []
+    for marker, stack_name in markers:
+        if (path / marker).exists() and stack_name not in found:
+            found.append(stack_name)
+
+    return tuple(found)
+
+
+def _suggested_commands(stack: tuple[str, ...], has_git: bool) -> tuple[str, ...]:
+    commands: list[str] = []
+    if has_git:
+        commands.append("git status -sb")
+
+    if "python" in stack:
+        commands.extend(["pytest -q", "ruff check src tests"])
+    if "node" in stack:
+        commands.extend(["npm test", "npm run lint"])
+    if "go" in stack:
+        commands.append("go test ./...")
+    if "rust" in stack:
+        commands.append("cargo test")
+
+    return tuple(commands)
+
+
+def _run_command(command: list[str]) -> str | None:
+    try:
+        result = subprocess.run(
+            command,
+            check=False,
+            capture_output=True,
+            text=True,
+            timeout=0.35,
+        )
+    except (OSError, subprocess.SubprocessError):
+        return None
+
+    if result.returncode != 0:
+        return None
+
+    output = result.stdout.strip()
+    if not output:
+        return None
+
+    return output

src/app/filesystem.py

@@ -13,28 +13,95 @@ class DirectoryEntry:
     has_children: bool
 
 
-def list_directories(path: Path) -> list[DirectoryEntry]:
+@dataclass(frozen=True, slots=True)
+class FileSystemEntry:
+    """Filesystem entry metadata for tree rendering."""
+
+    name: str
+    path: Path
+    is_directory: bool
+    has_children: bool
+
+
+def list_directories(path: Path, show_hidden: bool = False) -> list[DirectoryEntry]:
     """Return direct child directories sorted by name."""
 
+    entries = list_entries(path, show_hidden=show_hidden, include_files=False)
+    return [
+        DirectoryEntry(
+            name=entry.name,
+            path=entry.path,
+            has_children=entry.has_children,
+        )
+        for entry in entries
+    ]
+
+
+def list_entries(
+    path: Path, show_hidden: bool = False, include_files: bool = False
+) -> list[FileSystemEntry]:
+    """Return direct child entries sorted by type and name."""
+
     directory_path = path.expanduser().resolve()
-    entries: list[DirectoryEntry] = []
+    entries: list[FileSystemEntry] = []
 
-    for child in directory_path.iterdir():
+    try:
-        if child.is_dir():
+        children = list(directory_path.iterdir())
-            entries.append(
+    except PermissionError:
-                DirectoryEntry(
+        return []
-                    name=child.name,
+
-                    path=child,
+    for child in children:
-                    has_children=has_subdirectories(child),
+        try:
-                )
+            is_directory = child.is_dir()
+        except OSError:
+            continue
+
+        if not is_directory and not include_files:
+            continue
+        if not show_hidden and child.name.startswith("."):
+            continue
+
+        entries.append(
+            FileSystemEntry(
+                name=child.name,
+                path=child,
+                is_directory=is_directory,
+                has_children=(
+                    has_subdirectories(child, show_hidden=show_hidden)
+                    if is_directory
+                    else False
+                ),
             )
+        )
 
-    return sorted(entries, key=lambda entry: entry.name.casefold())
+    return sorted(
+        entries,
+        key=lambda entry: (not entry.is_directory, entry.name.casefold()),
+    )
 
 
-def has_subdirectories(path: Path) -> bool:
+def has_subdirectories(path: Path, show_hidden: bool = False) -> bool:
     """Return whether the directory contains at least one subdirectory."""
 
     directory_path = path.expanduser().resolve()
 
-    return any(child.is_dir() for child in directory_path.iterdir())
+    try:
+        children = list(directory_path.iterdir())
+    except PermissionError:
+        return False
+
+    for child in children:
+        try:
+            is_directory = child.is_dir()
+        except OSError:
+            continue
+
+        if not is_directory:
+            continue
+
+        if not show_hidden and child.name.startswith("."):
+            continue
+
+        return True
+
+    return False

src/app/history.py

@@ -1,15 +1,46 @@
 from __future__ import annotations
 
+import os
 from dataclasses import dataclass, field
 from pathlib import Path
 
 
+def default_history_path() -> Path:
+    """Return the default on-disk history location."""
+
+    override = os.environ.get("CD_BROWSER_HISTORY_FILE")
+    if override:
+        return Path(override).expanduser()
+
+    if os.name == "nt":
+        base = Path(os.environ.get("APPDATA", str(Path.home() / "AppData" / "Roaming")))
+    else:
+        base = Path(os.environ.get("XDG_STATE_HOME", str(Path.home() / ".local/state")))
+
+    return base / "cd-browser" / "history.txt"
+
+
 @dataclass(slots=True)
 class SessionHistory:
     """In-memory session history for visited directories."""
 
     _entries: list[Path] = field(default_factory=list)
     _index: int = -1
+    storage_path: Path | None = None
+    max_entries: int = 500
+
+    @classmethod
+    def persistent(
+        cls, storage_path: Path | None = None, max_entries: int = 500
+    ) -> SessionHistory:
+        """Create a history instance backed by an on-disk file."""
+
+        history = cls(
+            storage_path=storage_path or default_history_path(),
+            max_entries=max_entries,
+        )
+        history._load()
+        return history
 
     def visit(self, path: Path) -> Path:
         """Record a directory visit and discard forward history when needed."""
@@ -23,7 +54,9 @@ class SessionHistory:
             self._entries = self._entries[: self._index + 1]
 
         self._entries.append(resolved_path)
+        self._trim_to_limit()
         self._index = len(self._entries) - 1
+        self._persist()
         return resolved_path
 
     @property
@@ -66,3 +99,48 @@ class SessionHistory:
         """Return the full history as an immutable sequence."""
 
         return tuple(self._entries)
+
+    def _load(self) -> None:
+        if self.storage_path is None:
+            return
+
+        try:
+            lines = self.storage_path.read_text(encoding="utf-8").splitlines()
+        except FileNotFoundError:
+            return
+        except OSError:
+            return
+
+        loaded_entries: list[Path] = []
+        for line in lines:
+            raw = line.strip()
+            if not raw:
+                continue
+
+            resolved = Path(raw).expanduser().resolve()
+            if loaded_entries and loaded_entries[-1] == resolved:
+                continue
+
+            loaded_entries.append(resolved)
+
+        self._entries = loaded_entries
+        self._trim_to_limit()
+        self._index = len(self._entries) - 1
+
+    def _persist(self) -> None:
+        if self.storage_path is None:
+            return
+
+        try:
+            self.storage_path.parent.mkdir(parents=True, exist_ok=True)
+            contents = "".join(f"{entry}\n" for entry in self._entries)
+            self.storage_path.write_text(contents, encoding="utf-8")
+        except OSError:
+            return
+
+    def _trim_to_limit(self) -> None:
+        limit = max(1, self.max_entries)
+        if len(self._entries) <= limit:
+            return
+
+        self._entries = self._entries[-limit:]

src/app/navigator.py

@@ -3,13 +3,13 @@ from __future__ import annotations
 from dataclasses import dataclass, field
 from pathlib import Path
 
-from app.filesystem import list_directories
+from app.filesystem import list_entries
 from app.history import SessionHistory
 
 
 @dataclass(frozen=True, slots=True)
 class VisibleEntry:
-    """A directory row visible in the navigator."""
+    """A row visible in the navigator tree."""
 
     name: str
     path: Path
@@ -17,6 +17,7 @@ class VisibleEntry:
     has_children: bool
     is_expanded: bool
     is_parent: bool = False
+    is_file: bool = False
 
 
 @dataclass(slots=True)
@@ -28,6 +29,8 @@ class Navigator:
     current_path: Path = field(init=False)
     selected_index: int = field(init=False, default=0)
     _expanded_paths: set[Path] = field(init=False, default_factory=set)
+    show_hidden: bool = False
+    show_files: bool = False
 
     def __post_init__(self) -> None:
         self.current_path = self.start_path.expanduser().resolve()
@@ -68,6 +71,9 @@ class Navigator:
     def enter_selected_directory(self) -> Path:
         """Enter the currently selected directory and record it in history."""
 
+        if self.selected_entry.is_file:
+            return self.current_path
+
         return self._change_directory(self.selected_entry.path)
 
     def go_to_parent_directory(self) -> Path:
@@ -144,6 +150,22 @@ class Navigator:
         self._set_current_path(path)
         return path
 
+    def toggle_hidden(self) -> None:
+        """Toggle showing/hiding hidden directory entries."""
+
+        self.show_hidden = not self.show_hidden
+        self._reset_view_state()
+
+    def toggle_files(self) -> None:
+        """Toggle showing/hiding file entries."""
+
+        self.show_files = not self.show_files
+        self._reset_view_state()
+
+    def _reset_view_state(self) -> None:
+        self.selected_index = 0
+        self._expanded_paths.clear()
+
     def select_history_entry(self, index: int) -> Path:
         """Jump to a directory stored in session history."""
 
@@ -154,20 +176,25 @@ class Navigator:
     def _build_entries(self, path: Path, depth: int) -> list[VisibleEntry]:
         entries: list[VisibleEntry] = []
 
-        for directory in list_directories(path):
+        for item in list_entries(
-            is_expanded = directory.path in self._expanded_paths
+            path, show_hidden=self.show_hidden, include_files=self.show_files
+        ):
+            is_expanded = (
+                item.path in self._expanded_paths if item.is_directory else False
+            )
             entries.append(
                 VisibleEntry(
-                    name=directory.name,
+                    name=item.name,
-                    path=directory.path,
+                    path=item.path,
                     depth=depth,
-                    has_children=directory.has_children,
+                    has_children=item.has_children,
                     is_expanded=is_expanded,
+                    is_file=not item.is_directory,
                 )
             )
 
             if is_expanded:
-                entries.extend(self._build_entries(directory.path, depth=depth + 1))
+                entries.extend(self._build_entries(item.path, depth=depth + 1))
 
         return entries
 

src/app/opener.py

@@ -0,0 +1,311 @@
+from __future__ import annotations
+
+import os
+import shlex
+import shutil
+import subprocess
+import sys
+from dataclasses import dataclass
+from functools import lru_cache
+from pathlib import Path
+from typing import Literal
+
+try:
+    import tomllib
+except ModuleNotFoundError:  # pragma: no cover - python < 3.11
+    tomllib = None  # type: ignore[assignment]
+
+LaunchMode = Literal["background", "blocking"]
+DEFAULT_FILE_OPENERS = ("code", "open", "antigravity", "nvim", "nano", "less", "bat")
+DEFAULT_DIRECTORY_OPENERS = ("code", "opencode", "antigravity", "nvim")
+
+
+@dataclass(frozen=True, slots=True)
+class OpenWithOption:
+    """Candidate application command for opening a path."""
+
+    label: str
+    command_template: str
+    executable: str
+    launch_mode: LaunchMode
+    requires_gui: bool = False
+    supports_files: bool = True
+    supports_directories: bool = True
+
+
+def available_openers(path: Path) -> list[OpenWithOption]:
+    """Return available open-with options for a file or directory path."""
+
+    is_directory = path.is_dir()
+    has_gui = _has_gui_session()
+    options: list[OpenWithOption] = []
+    catalog = _options_catalog()
+    configured_option_ids = _configured_option_ids(is_directory, catalog)
+
+    for option_id in configured_option_ids:
+        option = catalog[option_id]
+        if is_directory and not option.supports_directories:
+            continue
+        if not is_directory and not option.supports_files:
+            continue
+        if option.requires_gui and not has_gui:
+            continue
+        if not shutil.which(option.executable):
+            continue
+
+        options.append(option)
+
+    return options
+
+
+def launch_background_option(path: Path, option: OpenWithOption) -> tuple[bool, str]:
+    """Launch a non-blocking option and return status/message."""
+
+    command = _command_parts(option.command_template, path)
+    if not command:
+        return False, "Invalid open command"
+
+    try:
+        subprocess.Popen(command, stdout=subprocess.DEVNULL, stderr=subprocess.DEVNULL)
+    except OSError as error:
+        return False, f"Open failed: {error}"
+
+    return True, f"Opened with {option.label}"
+
+
+def launch_blocking_option(path: Path, option: OpenWithOption) -> tuple[bool, str]:
+    """Launch a blocking terminal option and return status/message."""
+
+    command = _command_parts(option.command_template, path)
+    if not command:
+        return False, "Invalid open command"
+
+    try:
+        result = subprocess.run(command, check=False)
+    except OSError as error:
+        return False, f"Open failed: {error}"
+
+    if result.returncode != 0:
+        return (
+            False,
+            f"Open failed: {option.label} exited with code {result.returncode}",
+        )
+
+    return True, f"Opened with {option.label}"
+
+
+def is_blocking_option(option: OpenWithOption) -> bool:
+    """Return whether the option should block the current terminal session."""
+
+    return option.launch_mode == "blocking"
+
+
+def _options_catalog() -> dict[str, OpenWithOption]:
+    return {
+        "code": OpenWithOption(
+            label="VS Code",
+            command_template="code {path}",
+            executable="code",
+            launch_mode="background",
+            requires_gui=True,
+        ),
+        "open": OpenWithOption(
+            label="Open (system)",
+            command_template=_system_open_template(),
+            executable=_system_open_executable(),
+            launch_mode="background",
+            requires_gui=True,
+            supports_directories=False,
+        ),
+        "opencode": OpenWithOption(
+            label="OpenCode",
+            command_template="opencode {path}",
+            executable="opencode",
+            launch_mode="background",
+            supports_files=False,
+        ),
+        "antigravity": OpenWithOption(
+            label="Antigravity",
+            command_template="antigravity {path}",
+            executable="antigravity",
+            launch_mode="background",
+        ),
+        "nvim": OpenWithOption(
+            label="Neovim",
+            command_template="nvim {path}",
+            executable="nvim",
+            launch_mode="blocking",
+        ),
+        "nano": OpenWithOption(
+            label="Nano",
+            command_template="nano {path}",
+            executable="nano",
+            launch_mode="blocking",
+            supports_directories=False,
+        ),
+        "less": OpenWithOption(
+            label="Less",
+            command_template="less {path}",
+            executable="less",
+            launch_mode="blocking",
+            supports_directories=False,
+        ),
+        "bat": OpenWithOption(
+            label="Bat",
+            command_template="bat {path}",
+            executable="bat",
+            launch_mode="blocking",
+            supports_directories=False,
+        ),
+    }
+
+
+def _configured_option_ids(
+    is_directory: bool, catalog: dict[str, OpenWithOption]
+) -> list[str]:
+    config = _load_openers_config()
+    defaults = (
+        list(DEFAULT_DIRECTORY_OPENERS) if is_directory else list(DEFAULT_FILE_OPENERS)
+    )
+    configured = config["directories"] if is_directory else config["files"]
+
+    seen: set[str] = set()
+    option_ids: list[str] = []
+    for option_id in configured:
+        if option_id not in catalog or option_id in seen:
+            continue
+        seen.add(option_id)
+        option_ids.append(option_id)
+
+    if option_ids:
+        return option_ids
+
+    return [option_id for option_id in defaults if option_id in catalog]
+
+
+def _openers_config_path() -> Path:
+    override = os.environ.get("CD_BROWSER_CONFIG_FILE")
+    if override:
+        return Path(override).expanduser()
+
+    if os.name == "nt":
+        base = Path(os.environ.get("APPDATA", str(Path.home() / "AppData" / "Roaming")))
+    else:
+        base = Path(os.environ.get("XDG_CONFIG_HOME", str(Path.home() / ".config")))
+
+    return base / "cd-browser" / "config.toml"
+
+
+@lru_cache(maxsize=1)
+def _load_openers_config() -> dict[str, list[str]]:
+    defaults = {
+        "files": list(DEFAULT_FILE_OPENERS),
+        "directories": list(DEFAULT_DIRECTORY_OPENERS),
+    }
+    config_path = _openers_config_path()
+    _ensure_default_config_file(config_path)
+    if tomllib is None or not config_path.exists():
+        return defaults
+
+    try:
+        raw_data = tomllib.loads(config_path.read_text(encoding="utf-8"))
+    except (OSError, tomllib.TOMLDecodeError):
+        return defaults
+
+    if not isinstance(raw_data, dict):
+        return defaults
+
+    open_with = raw_data.get("open_with")
+    if not isinstance(open_with, dict):
+        return defaults
+
+    files = open_with.get("files")
+    directories = open_with.get("directories")
+    return {
+        "files": _normalize_ids(files, defaults["files"]),
+        "directories": _normalize_ids(directories, defaults["directories"]),
+    }
+
+
+def _normalize_ids(value: object, fallback: list[str]) -> list[str]:
+    if not isinstance(value, list):
+        return fallback
+
+    normalized = [
+        item.strip() for item in value if isinstance(item, str) and item.strip()
+    ]
+    return normalized if normalized else fallback
+
+
+def _ensure_default_config_file(path: Path) -> None:
+    if path.exists():
+        return
+
+    try:
+        path.parent.mkdir(parents=True, exist_ok=True)
+        path.write_text(_default_config_toml(), encoding="utf-8")
+    except OSError:
+        return
+
+
+def _default_config_toml() -> str:
+    file_ids = '", "'.join(DEFAULT_FILE_OPENERS)
+    directory_ids = '", "'.join(DEFAULT_DIRECTORY_OPENERS)
+    return (
+        "# cd-browser opener configuration\n"
+        "# Reorder or remove items to customize menu priority.\n"
+        "[open_with]\n"
+        f'files = ["{file_ids}"]\n'
+        f'directories = ["{directory_ids}"]\n'
+    )
+
+
+def _reset_openers_config_cache() -> None:
+    _load_openers_config.cache_clear()
+
+
+def _has_gui_session() -> bool:
+    if os.environ.get("SSH_CONNECTION") or os.environ.get("SSH_TTY"):
+        return False
+
+    if sys.platform == "darwin":
+        return True
+
+    if sys.platform.startswith("linux"):
+        return bool(os.environ.get("DISPLAY") or os.environ.get("WAYLAND_DISPLAY"))
+
+    if sys.platform.startswith("win"):
+        return True
+
+    return False
+
+
+def _system_open_template() -> str:
+    if sys.platform == "darwin":
+        return "open {path}"
+
+    if sys.platform.startswith("linux"):
+        return "xdg-open {path}"
+
+    if sys.platform.startswith("win"):
+        return 'cmd /c start "" {path}'
+
+    return "open {path}"
+
+
+def _system_open_executable() -> str:
+    if sys.platform == "darwin":
+        return "open"
+
+    if sys.platform.startswith("linux"):
+        return "xdg-open"
+
+    if sys.platform.startswith("win"):
+        return "cmd"
+
+    return "open"
+
+
+def _command_parts(command_template: str, path: Path) -> list[str]:
+    rendered = command_template.format(path=shlex.quote(str(path)))
+    return shlex.split(rendered)

src/cd_browser_post_install.py

@@ -0,0 +1,84 @@
+#!/usr/bin/env python3
+"""Post-install script for cd-browser to guide users on shell integration."""
+
+import os
+import sys
+
+
+def _profile_for_shell(shell: str) -> str:
+    if shell == "zsh":
+        return "~/.zshrc"
+
+    return "~/.bashrc"
+
+
+def _is_cd_function_present(profile_path: str) -> bool:
+    if not os.path.exists(profile_path):
+        return False
+
+    with open(profile_path, encoding="utf-8") as profile_file:
+        return "cd_() {" in profile_file.read()
+
+
+def main() -> None:
+    """Print shell integration instructions after installation."""
+    print("\n" + "=" * 60)
+    print("🎉 cd-browser installed successfully!")
+    print("=" * 60)
+    print()
+    print(
+        "To enable the 'cd_' command, you need to add a function to your shell profile."
+    )
+    print()
+
+    shell = os.environ.get("SHELL", "").split("/")[-1]
+    profile = _profile_for_shell(shell)
+
+    cd_function = """cd_() {
+  local target
+  target="$(cd_browser)" || return
+  if [ -n "$target" ] && [ -d "$target" ]; then
+    cd "$target"
+  fi
+}"""
+
+    print(f"Copy this to the end of {profile}:")
+    print()
+    print(cd_function)
+    print()
+
+    profile_path = os.path.expanduser(profile)
+
+    try:
+        response = (
+            input("Do you want me to add it automatically? (y/n): ").strip().lower()
+        )
+        if response == "y":
+            if _is_cd_function_present(profile_path):
+                print(f"\nℹ️ cd_() already exists in {profile}, no changes made.")
+            else:
+                with open(profile_path, "a", encoding="utf-8") as f:
+                    f.write("\n" + cd_function + "\n")
+                print(f"\n✅ Added to {profile}")
+            print(f"Run 'source {profile}' or restart your terminal to activate cd_.")
+        else:
+            print(f"\nAdd the function to {profile} manually.")
+            print(f"Then run 'source {profile}' or restart terminal.")
+    except EOFError:
+        print(
+            f"\nNo interactive input detected. Add the function to {profile} manually."
+        )
+        print(f"Then run 'source {profile}' or restart terminal.")
+    except KeyboardInterrupt:
+        print("\n\nSetup cancelled. You can add the function manually later.")
+        sys.exit(0)
+
+    print("\n" + "=" * 60)
+    print(
+        f"For uninstall: after 'pip uninstall cd-browser', remove cd_() from {profile}."
+    )
+    print("=" * 60 + "\n")
+
+
+if __name__ == "__main__":
+    main()

tests/test_cli.py

@@ -4,9 +4,10 @@ import pytest
 
 from app.cli import run_cli
 from app.navigator import Navigator
+from app.ui import TerminalUI
 
 
-class StubUI:
+class StubUI(TerminalUI):
     def __init__(self, result: Path) -> None:
         self.result = result
         self.navigator: Navigator | None = None

tests/test_filesystem.py

@@ -2,7 +2,13 @@ from pathlib import Path
 
 import pytest
 
-from app.filesystem import DirectoryEntry, has_subdirectories, list_directories
+from app.filesystem import (
+    DirectoryEntry,
+    FileSystemEntry,
+    has_subdirectories,
+    list_directories,
+    list_entries,
+)
 
 
 def test_has_subdirectories_detects_nested_directory(tmp_path: Path) -> None:
@@ -44,3 +50,55 @@ def test_list_directories_raises_for_missing_directory(tmp_path: Path) -> None:
 
     with pytest.raises(FileNotFoundError):
         list_directories(missing_path)
+
+
+def test_list_entries_returns_files_when_include_files_enabled(tmp_path: Path) -> None:
+    folder = tmp_path / "folder"
+    file_path = tmp_path / "notes.txt"
+    folder.mkdir()
+    file_path.write_text("content", encoding="utf-8")
+
+    assert list_entries(tmp_path, include_files=True) == [
+        FileSystemEntry(
+            name="folder",
+            path=folder,
+            is_directory=True,
+            has_children=False,
+        ),
+        FileSystemEntry(
+            name="notes.txt",
+            path=file_path,
+            is_directory=False,
+            has_children=False,
+        ),
+    ]
+
+
+def test_list_directories_skips_permission_errors_for_children(tmp_path: Path) -> None:
+    root = tmp_path / "root"
+    root.mkdir()
+    allowed = root / "allowed"
+    blocked = root / "blocked"
+    allowed.mkdir()
+    blocked.mkdir()
+
+    blocked.chmod(0)
+    try:
+        entries = list_directories(root)
+    finally:
+        blocked.chmod(0o700)
+
+    assert any(entry.name == "allowed" for entry in entries)
+
+
+def test_has_subdirectories_returns_false_on_permission_error(tmp_path: Path) -> None:
+    blocked = tmp_path / "blocked"
+    blocked.mkdir()
+
+    blocked.chmod(0)
+    try:
+        result = has_subdirectories(blocked)
+    finally:
+        blocked.chmod(0o700)
+
+    assert result is False

tests/test_history.py

@@ -2,7 +2,7 @@ from pathlib import Path
 
 import pytest
 
-from app.history import SessionHistory
+from app.history import SessionHistory, default_history_path
 
 
 def test_visit_records_current_directory(tmp_path: Path) -> None:
@@ -82,3 +82,48 @@ def test_select_raises_for_invalid_index() -> None:
 
     with pytest.raises(IndexError):
         history.select(0)
+
+
+def test_persistent_history_loads_entries_from_disk(tmp_path: Path) -> None:
+    first = tmp_path / "first"
+    second = tmp_path / "second"
+    for directory in (first, second):
+        directory.mkdir()
+    history_file = tmp_path / "history.txt"
+    history_file.write_text(f"{first}\n{second}\n", encoding="utf-8")
+
+    history = SessionHistory.persistent(storage_path=history_file)
+
+    assert history.entries() == (first.resolve(), second.resolve())
+    assert history.current == second.resolve()
+
+
+def test_persistent_history_visit_writes_to_disk_and_applies_limit(
+    tmp_path: Path,
+) -> None:
+    first = tmp_path / "first"
+    second = tmp_path / "second"
+    third = tmp_path / "third"
+    for directory in (first, second, third):
+        directory.mkdir()
+    history_file = tmp_path / "state" / "history.txt"
+
+    history = SessionHistory.persistent(storage_path=history_file, max_entries=2)
+    history.visit(first)
+    history.visit(second)
+    history.visit(third)
+
+    assert history.entries() == (second.resolve(), third.resolve())
+    assert history_file.read_text(encoding="utf-8").splitlines() == [
+        str(second.resolve()),
+        str(third.resolve()),
+    ]
+
+
+def test_default_history_path_uses_override_env(
+    monkeypatch: pytest.MonkeyPatch, tmp_path: Path
+) -> None:
+    override = tmp_path / "custom-history.txt"
+    monkeypatch.setenv("CD_BROWSER_HISTORY_FILE", str(override))
+
+    assert default_history_path() == override

tests/test_navigator.py

@@ -25,6 +25,49 @@ def test_navigator_initial_state_includes_parent_entry(tmp_path: Path) -> None:
     ]
 
 
+def test_toggle_hidden_directories(tmp_path: Path) -> None:
+    root = tmp_path / "root"
+    root.mkdir()
+    visible = root / "visible"
+    visible.mkdir()
+    hidden = root / ".hidden"
+    hidden.mkdir()
+
+    navigator = Navigator(root)
+
+    assert [entry.name for entry in navigator.visible_entries] == ["..", "visible"]
+
+    navigator.toggle_hidden()
+    assert navigator.show_hidden is True
+    assert [entry.name for entry in navigator.visible_entries] == [
+        "..",
+        ".hidden",
+        "visible",
+    ]
+
+    navigator.toggle_hidden()
+    assert navigator.show_hidden is False
+    assert [entry.name for entry in navigator.visible_entries] == ["..", "visible"]
+
+
+def test_toggle_files_includes_files_in_visible_entries(tmp_path: Path) -> None:
+    root = tmp_path / "root"
+    root.mkdir()
+    (root / "folder").mkdir()
+    (root / "notes.txt").write_text("hello", encoding="utf-8")
+
+    navigator = Navigator(root)
+    assert [entry.name for entry in navigator.visible_entries] == ["..", "folder"]
+
+    navigator.toggle_files()
+    assert navigator.show_files is True
+    assert [entry.name for entry in navigator.visible_entries] == [
+        "..",
+        "folder",
+        "notes.txt",
+    ]
+
+
 def test_expand_selected_directory_reveals_nested_entries(tmp_path: Path) -> None:
     current = tmp_path / "workspace"
     current.mkdir()

tests/test_opener.py

@@ -0,0 +1,254 @@
+from __future__ import annotations
+
+from pathlib import Path
+from subprocess import CompletedProcess
+
+import pytest
+
+from app.opener import (
+    OpenWithOption,
+    _reset_openers_config_cache,
+    available_openers,
+    is_blocking_option,
+    launch_background_option,
+    launch_blocking_option,
+)
+
+
+@pytest.fixture(autouse=True)
+def reset_openers_config_cache() -> None:
+    _reset_openers_config_cache()
+
+
+def test_available_openers_headless_file_excludes_gui(
+    monkeypatch: pytest.MonkeyPatch, tmp_path: Path
+) -> None:
+    file_path = tmp_path / "notes.txt"
+    file_path.write_text("hello", encoding="utf-8")
+
+    monkeypatch.setenv("SSH_CONNECTION", "1")
+
+    available = {
+        "antigravity": "/usr/local/bin/antigravity",
+        "nvim": "/usr/local/bin/nvim",
+        "nano": "/usr/bin/nano",
+        "less": "/usr/bin/less",
+        "bat": "/usr/local/bin/bat",
+        "code": "/usr/local/bin/code",
+        "open": "/usr/bin/open",
+    }
+    monkeypatch.setattr("app.opener.shutil.which", lambda name: available.get(name))
+
+    labels = [option.label for option in available_openers(file_path)]
+
+    assert "VS Code" not in labels
+    assert "Open (system)" not in labels
+    assert labels == ["Antigravity", "Neovim", "Nano", "Less", "Bat"]
+
+
+def test_available_openers_gui_directory_filters_file_only_tools(
+    monkeypatch: pytest.MonkeyPatch, tmp_path: Path
+) -> None:
+    folder = tmp_path / "project"
+    folder.mkdir()
+
+    monkeypatch.delenv("SSH_CONNECTION", raising=False)
+    monkeypatch.setattr("app.opener.sys.platform", "darwin")
+
+    available = {
+        "antigravity": "/usr/local/bin/antigravity",
+        "nvim": "/usr/local/bin/nvim",
+        "nano": "/usr/bin/nano",
+        "less": "/usr/bin/less",
+        "bat": "/usr/local/bin/bat",
+        "code": "/usr/local/bin/code",
+        "open": "/usr/bin/open",
+    }
+    monkeypatch.setattr("app.opener.shutil.which", lambda name: available.get(name))
+
+    labels = [option.label for option in available_openers(folder)]
+
+    assert labels == ["VS Code", "Antigravity", "Neovim"]
+
+
+def test_available_openers_respects_configured_order(
+    monkeypatch: pytest.MonkeyPatch, tmp_path: Path
+) -> None:
+    config_path = tmp_path / "config.toml"
+    config_path.write_text(
+        ('[open_with]\nfiles = ["nvim", "code"]\ndirectories = ["opencode", "code"]\n'),
+        encoding="utf-8",
+    )
+    monkeypatch.setenv("CD_BROWSER_CONFIG_FILE", str(config_path))
+    monkeypatch.delenv("SSH_CONNECTION", raising=False)
+    monkeypatch.setattr("app.opener.sys.platform", "darwin")
+
+    available = {
+        "opencode": "/usr/local/bin/opencode",
+        "nvim": "/usr/local/bin/nvim",
+        "code": "/usr/local/bin/code",
+    }
+    monkeypatch.setattr("app.opener.shutil.which", lambda name: available.get(name))
+
+    folder = tmp_path / "project"
+    folder.mkdir()
+    file_path = tmp_path / "notes.txt"
+    file_path.write_text("hello", encoding="utf-8")
+
+    folder_labels = [option.label for option in available_openers(folder)]
+    file_labels = [option.label for option in available_openers(file_path)]
+
+    assert folder_labels == ["OpenCode", "VS Code"]
+    assert file_labels == ["Neovim", "VS Code"]
+
+
+def test_available_openers_invalid_config_falls_back_to_defaults(
+    monkeypatch: pytest.MonkeyPatch, tmp_path: Path
+) -> None:
+    config_path = tmp_path / "config.toml"
+    config_path.write_text("[open_with\n", encoding="utf-8")
+    monkeypatch.setenv("CD_BROWSER_CONFIG_FILE", str(config_path))
+    monkeypatch.setenv("SSH_CONNECTION", "1")
+
+    available = {
+        "antigravity": "/usr/local/bin/antigravity",
+        "nvim": "/usr/local/bin/nvim",
+        "nano": "/usr/bin/nano",
+        "less": "/usr/bin/less",
+        "bat": "/usr/local/bin/bat",
+    }
+    monkeypatch.setattr("app.opener.shutil.which", lambda name: available.get(name))
+
+    file_path = tmp_path / "notes.txt"
+    file_path.write_text("hello", encoding="utf-8")
+    labels = [option.label for option in available_openers(file_path)]
+
+    assert labels == ["Antigravity", "Neovim", "Nano", "Less", "Bat"]
+
+
+def test_available_openers_creates_default_config_when_missing(
+    monkeypatch: pytest.MonkeyPatch, tmp_path: Path
+) -> None:
+    config_path = tmp_path / "config.toml"
+    monkeypatch.setenv("CD_BROWSER_CONFIG_FILE", str(config_path))
+    monkeypatch.setenv("SSH_CONNECTION", "1")
+    monkeypatch.setattr(
+        "app.opener.shutil.which",
+        lambda name: (
+            "/usr/bin/true" if name in {"nvim", "nano", "less", "bat"} else None
+        ),
+    )
+
+    file_path = tmp_path / "notes.txt"
+    file_path.write_text("hello", encoding="utf-8")
+    available_openers(file_path)
+
+    assert config_path.exists()
+    config_text = config_path.read_text(encoding="utf-8")
+    assert "[open_with]" in config_text
+    assert (
+        'files = ["code", "open", "antigravity", "nvim", "nano", "less", "bat"]'
+        in config_text
+    )
+
+
+def test_available_openers_does_not_override_existing_config(
+    monkeypatch: pytest.MonkeyPatch, tmp_path: Path
+) -> None:
+    config_path = tmp_path / "config.toml"
+    original = '[open_with]\nfiles = ["nvim"]\ndirectories = ["opencode"]\n'
+    config_path.write_text(original, encoding="utf-8")
+    monkeypatch.setenv("CD_BROWSER_CONFIG_FILE", str(config_path))
+    monkeypatch.setenv("SSH_CONNECTION", "1")
+    monkeypatch.setattr(
+        "app.opener.shutil.which",
+        lambda name: "/usr/bin/true" if name in {"nvim", "opencode"} else None,
+    )
+
+    file_path = tmp_path / "notes.txt"
+    file_path.write_text("hello", encoding="utf-8")
+    available_openers(file_path)
+
+    assert config_path.read_text(encoding="utf-8") == original
+
+
+def test_launch_background_option_returns_success(
+    monkeypatch: pytest.MonkeyPatch, tmp_path: Path
+) -> None:
+    option = OpenWithOption(
+        label="VS Code",
+        command_template="code {path}",
+        executable="code",
+        launch_mode="background",
+        requires_gui=True,
+    )
+
+    monkeypatch.setattr("app.opener.subprocess.Popen", lambda *args, **kwargs: None)
+
+    success, message = launch_background_option(tmp_path, option)
+
+    assert success is True
+    assert "VS Code" in message
+
+
+def test_launch_blocking_option_reports_non_zero_exit(
+    monkeypatch: pytest.MonkeyPatch, tmp_path: Path
+) -> None:
+    option = OpenWithOption(
+        label="Neovim",
+        command_template="nvim {path}",
+        executable="nvim",
+        launch_mode="blocking",
+    )
+
+    monkeypatch.setattr(
+        "app.opener.subprocess.run",
+        lambda *args, **kwargs: CompletedProcess(args=[], returncode=2),
+    )
+
+    success, message = launch_blocking_option(tmp_path, option)
+
+    assert success is False
+    assert "code 2" in message
+
+
+def test_is_blocking_option_uses_launch_mode() -> None:
+    blocking = OpenWithOption(
+        label="Neovim",
+        command_template="nvim {path}",
+        executable="nvim",
+        launch_mode="blocking",
+    )
+    background = OpenWithOption(
+        label="VS Code",
+        command_template="code {path}",
+        executable="code",
+        launch_mode="background",
+    )
+
+    assert is_blocking_option(blocking) is True
+    assert is_blocking_option(background) is False
+
+
+def test_launch_blocking_option_handles_paths_with_spaces(
+    monkeypatch: pytest.MonkeyPatch, tmp_path: Path
+) -> None:
+    target_path = tmp_path / "COMPETENCIAS A.LEDO"
+    option = OpenWithOption(
+        label="Neovim",
+        command_template="nvim {path}",
+        executable="nvim",
+        launch_mode="blocking",
+    )
+    captured: dict[str, list[str]] = {}
+
+    def fake_run(command: list[str], check: bool) -> CompletedProcess[object]:
+        captured["command"] = command
+        return CompletedProcess(args=[], returncode=0)
+
+    monkeypatch.setattr("app.opener.subprocess.run", fake_run)
+
+    success, _message = launch_blocking_option(target_path, option)
+
+    assert success is True
+    assert captured["command"] == ["nvim", str(target_path)]

tests/test_post_install.py

@@ -0,0 +1,47 @@
+from pathlib import Path
+
+import pytest
+
+from cd_browser_post_install import main
+
+CD_FUNCTION_SNIPPET = "cd_() {"
+
+
+def test_post_install_handles_eof_without_crashing(
+    monkeypatch: pytest.MonkeyPatch,
+    capsys: pytest.CaptureFixture[str],
+) -> None:
+    monkeypatch.setenv("SHELL", "/bin/zsh")
+    monkeypatch.setattr(
+        "builtins.input", lambda _prompt: (_ for _ in ()).throw(EOFError)
+    )
+
+    main()
+
+    output = capsys.readouterr().out
+    assert "No interactive input detected" in output
+    assert "source ~/.zshrc" in output
+
+
+def test_post_install_adds_cd_function_once(
+    monkeypatch: pytest.MonkeyPatch,
+    tmp_path: Path,
+    capsys: pytest.CaptureFixture[str],
+) -> None:
+    monkeypatch.setenv("SHELL", "/bin/zsh")
+    monkeypatch.setenv("HOME", str(tmp_path))
+
+    responses = iter(["y", "y"])
+    monkeypatch.setattr("builtins.input", lambda _prompt: next(responses))
+
+    main()
+    main()
+
+    profile_path = tmp_path / ".zshrc"
+    content = profile_path.read_text(encoding="utf-8")
+
+    assert content.count(CD_FUNCTION_SNIPPET) == 1
+
+    output = capsys.readouterr().out
+    assert "already exists" in output
+    assert "source ~/.zshrc" in output

tests/test_ui.py

@@ -5,11 +5,13 @@ import pytest
 
 from app.navigator import Navigator, VisibleEntry
 from app.ui import (
+    ESCAPE_KEY,
     HistoryLine,
     RenderLine,
     TerminalUI,
     build_history_lines,
     build_render_lines,
+    build_status_line,
     clamp_scroll_offset,
     format_entry,
     move_selection,
@@ -52,6 +54,19 @@ def test_format_entry_supports_parent_and_tree_indicators(tmp_path: Path) -> Non
     assert format_entry(expanded_child) == "      build"
 
 
+def test_format_entry_marks_files_with_file_indicator(tmp_path: Path) -> None:
+    file_entry = VisibleEntry(
+        name="notes.txt",
+        path=tmp_path / "notes.txt",
+        depth=0,
+        has_children=False,
+        is_expanded=False,
+        is_file=True,
+    )
+
+    assert format_entry(file_entry) == "• notes.txt"
+
+
 def test_build_render_lines_marks_selected_entry(tmp_path: Path) -> None:
     workspace = tmp_path / "workspace"
     workspace.mkdir()
@@ -106,7 +121,7 @@ def test_toggle_history_mode_selects_current_history_entry(tmp_path: Path) -> No
     ui._toggle_history_mode(navigator)
 
     assert ui._history_mode is True
-    assert ui._history_selected_index == 1
+    assert ui._history_selected_index == 0
 
 
 def test_history_mode_enter_selects_entry_and_exits(tmp_path: Path) -> None:
@@ -126,7 +141,7 @@ def test_history_mode_enter_selects_entry_and_exits(tmp_path: Path) -> None:
 
     ui = TerminalUI()
     ui._toggle_history_mode(navigator)
-    ui._handle_history_key(curses.KEY_UP, navigator)
+    ui._handle_history_key(curses.KEY_DOWN, navigator)
     ui._handle_history_key(10, navigator)
 
     assert ui._history_mode is False
@@ -134,6 +149,86 @@ def test_history_mode_enter_selects_entry_and_exits(tmp_path: Path) -> None:
     assert navigator.selected_index == 0
 
 
+def test_history_mode_renders_most_recent_entry_first(tmp_path: Path) -> None:
+    root = tmp_path / "root"
+    first = root / "first"
+    second = root / "second"
+    root.mkdir()
+    first.mkdir()
+    second.mkdir()
+
+    navigator = Navigator(root)
+    navigator.set_selected_index(1)
+    navigator.enter_selected_directory()
+    navigator.go_to_parent_directory()
+    navigator.set_selected_index(2)
+    navigator.enter_selected_directory()
+
+    ui = TerminalUI()
+    ui._toggle_history_mode(navigator)
+    lines, _selected_index = ui._build_history_lines_for_render(
+        navigator.history.entries()
+    )
+
+    assert lines[0].text == str(second.resolve())
+
+
+def test_history_mode_slash_activates_history_filter() -> None:
+    ui = TerminalUI()
+    navigator = Navigator(Path.cwd())
+    ui._history_mode = True
+
+    ui._handle_history_key(ord("/"), navigator)
+
+    assert ui._history_filter_mode is True
+    assert ui._history_filter_query == ""
+
+
+def test_history_filter_enter_selects_filtered_entry_and_exits_history(
+    tmp_path: Path,
+) -> None:
+    root = tmp_path / "root"
+    alpha = root / "alpha"
+    beta = root / "beta"
+    root.mkdir()
+    alpha.mkdir()
+    beta.mkdir()
+
+    navigator = Navigator(root)
+    navigator.set_selected_index(1)
+    navigator.enter_selected_directory()
+    navigator.go_to_parent_directory()
+    navigator.set_selected_index(2)
+    navigator.enter_selected_directory()
+
+    ui = TerminalUI()
+    ui._toggle_history_mode(navigator)
+    ui._history_filter_mode = True
+    ui._history_filter_query = "alpha"
+
+    ui._handle_history_key(10, navigator)
+
+    assert navigator.current_path == alpha.resolve()
+    assert ui._history_mode is False
+    assert ui._history_filter_mode is False
+
+
+def test_history_filter_escape_disables_only_history_filter(tmp_path: Path) -> None:
+    root = tmp_path / "root"
+    root.mkdir()
+    navigator = Navigator(root)
+    ui = TerminalUI()
+    ui._toggle_history_mode(navigator)
+    ui._history_filter_mode = True
+    ui._history_filter_query = "ro"
+
+    ui._handle_history_key(ESCAPE_KEY, navigator)
+
+    assert ui._history_mode is True
+    assert ui._history_filter_mode is False
+    assert ui._history_filter_query == ""
+
+
 def test_history_mode_toggle_off_keeps_current_directory(tmp_path: Path) -> None:
     root = tmp_path / "root"
     root.mkdir()
@@ -221,6 +316,160 @@ def test_enter_returns_selected_path_without_navigating(tmp_path: Path) -> None:
     assert navigator.current_path == workspace.resolve()
 
 
+def test_toggle_files_key_updates_navigator_state(tmp_path: Path) -> None:
+    root = tmp_path / "root"
+    root.mkdir()
+    (root / "folder").mkdir()
+    (root / "notes.txt").write_text("content", encoding="utf-8")
+
+    navigator = Navigator(root)
+    ui = TerminalUI()
+
+    assert navigator.show_files is False
+    assert ui._handle_tree_key(ord("a"), navigator) is None
+    assert navigator.show_files is True
+
+
+def test_filter_matching_is_case_insensitive(tmp_path: Path) -> None:
+    root = tmp_path / "root"
+    root.mkdir()
+    (root / "Alpha").mkdir()
+    (root / "beta").mkdir()
+
+    navigator = Navigator(root)
+    ui = TerminalUI()
+    ui._filter_mode = True
+    ui._filter_query = "alp"
+
+    matches = ui._matching_indices(navigator.visible_entries)
+
+    assert matches == [1]
+
+
+def test_build_status_line_shows_filter_off_when_filter_mode_is_disabled(
+    tmp_path: Path,
+) -> None:
+    root = tmp_path / "root"
+    root.mkdir()
+    navigator = Navigator(root)
+
+    status_line = build_status_line(
+        navigator,
+        filter_mode=False,
+        filter_query="",
+        dev_summary="git:- stack:-",
+    )
+
+    assert "filter: off" in status_line
+
+
+def test_build_status_line_shows_empty_filter_without_off_when_filter_is_active(
+    tmp_path: Path,
+) -> None:
+    root = tmp_path / "root"
+    root.mkdir()
+    navigator = Navigator(root)
+
+    status_line = build_status_line(
+        navigator,
+        filter_mode=True,
+        filter_query="",
+        dev_summary="git:- stack:-",
+    )
+
+    assert "filter: |" in status_line
+
+
+def test_filter_mode_uses_g_and_g_upper_as_query_characters(tmp_path: Path) -> None:
+    root = tmp_path / "root"
+    root.mkdir()
+    (root / "alpha").mkdir()
+    (root / "gamma").mkdir()
+
+    navigator = Navigator(root)
+    ui = TerminalUI()
+    ui._filter_mode = True
+
+    assert ui._handle_filter_key(ord("g"), navigator) is None
+    assert ui._handle_filter_key(ord("G"), navigator) is None
+    assert ui._filter_query == "gG"
+
+
+def test_filter_enter_on_directory_navigates_and_exits_filter(tmp_path: Path) -> None:
+    root = tmp_path / "root"
+    child = root / "child"
+    root.mkdir()
+    child.mkdir()
+
+    navigator = Navigator(root)
+    ui = TerminalUI()
+    ui._filter_mode = True
+    ui._filter_query = "child"
+
+    result = ui._handle_filter_key(10, navigator)
+
+    assert result is None
+    assert ui._filter_mode is False
+    assert navigator.current_path == child.resolve()
+
+
+def test_filter_enter_on_file_opens_menu_and_exits_filter(
+    tmp_path: Path, monkeypatch: pytest.MonkeyPatch
+) -> None:
+    root = tmp_path / "root"
+    root.mkdir()
+    file_path = root / "notes.txt"
+    file_path.write_text("hello", encoding="utf-8")
+
+    navigator = Navigator(root)
+    navigator.toggle_files()
+    ui = TerminalUI()
+    ui._filter_mode = True
+    ui._filter_query = "notes"
+    opened: dict[str, bool] = {"called": False}
+
+    def fake_open_with_selected(
+        _navigator: Navigator, _stdscr: curses.window | None
+    ) -> None:
+        opened["called"] = True
+
+    monkeypatch.setattr(ui, "_open_with_selected", fake_open_with_selected)
+
+    result = ui._handle_filter_key(10, navigator)
+
+    assert result is None
+    assert ui._filter_mode is False
+    assert opened["called"] is True
+    assert navigator.selected_entry.path == file_path.resolve()
+
+
+def test_end_key_jumps_to_last_entry(tmp_path: Path) -> None:
+    root = tmp_path / "root"
+    root.mkdir()
+    for name in ("alpha", "beta", "gamma"):
+        (root / name).mkdir()
+
+    navigator = Navigator(root)
+    ui = TerminalUI()
+
+    assert ui._handle_tree_key(curses.KEY_END, navigator) is None
+    assert navigator.selected_index == len(navigator.visible_entries) - 1
+
+
+def test_info_mode_toggles_with_i_and_escape(tmp_path: Path) -> None:
+    root = tmp_path / "root"
+    root.mkdir()
+    navigator = Navigator(root)
+    ui = TerminalUI()
+
+    assert ui._info_mode is False
+    assert ui._handle_tree_key(ord("i"), navigator) is None
+    assert ui._info_mode is True
+
+    ui._handle_info_key(ESCAPE_KEY)
+    assert ui._info_mode is False
+
+
 def test_open_terminal_streams_raises_without_terminal(
     monkeypatch: pytest.MonkeyPatch,
 ) -> None: