chore(conductor): Archive completed track 'Review logging'

conductor/archive/logging_refactor_20260226/spec.md

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+# Specification: Logging Reorganization and Automated Pruning
+
+## Overview
+Currently, `gui_2.py` and the test suites generate a large number of log files in a flat `logs/` directory. These logs accumulate quickly, especially during incremental development and testing. This track aims to organize logs into session-based sub-directories and implement a heuristic-based pruning system to keep the log directory clean while preserving valuable sessions.
+
+## Functional Requirements
+1. **Session-Based Organization:**
+   - Logs must be stored in sub-directories within `logs/`.
+   - Sub-directory naming convention: `YYYYMMDD_HHMMSS[_Label]` (e.g., `20260226_143005_feature_x`).
+   - The "Label" should be included if a project or track is active at session start.
+2. **Central Registry:**
+   - A `logs/log_registry.toml` file will track session metadata, including:
+     - Session ID / Path
+     - Start Time
+     - Whitelist Status (Manual/Auto)
+     - Metrics (message count, errors detected, total size).
+3. **Automated Pruning Heuristic:**
+   - Pruning triggers on application startup (`gui_2.py`).
+   - **Target:** Logs older than 24 hours.
+   - **Exemption:** Whitelisted logs are never auto-pruned.
+   - **Insignificance Criteria:** Non-whitelisted logs under a specific size threshold (heuristic: ~2 KB) or with zero significant interactions will be purged.
+4. **Whitelisting System:**
+   - **Auto-Whitelisting:** Sessions are marked as "rich" if they meet any of these:
+     - Complexity: > 10 messages/interactions.
+     - Diagnostics: Contains `ERROR`, `WARNING`, `EXCEPTION`.
+     - Major Events: User created a new project or initialized a track.
+   - **Manual Whitelisting:** The user can "star" a session via the GUI (persisted in the registry).
+
+## Non-Functional Requirements
+- **Performance:** Pruning and registry updates must be asynchronous or extremely fast to avoid delaying app startup.
+- **Safety:** Ensure the pruning logic is conservative to prevent accidental data loss of important debug information.
+
+## Acceptance Criteria
+- [ ] New logs are created in session-specific folders.
+- [ ] The `log_registry.toml` correctly identifies and tracks sessions.
+- [ ] On startup, non-whitelisted logs older than 1 day are successfully pruned.
+- [ ] Whitelisted logs (due to complexity or errors) remain untouched.
+- [ ] (Bonus) The GUI displays a basic list of sessions with their "starred" status.
+
+## Out of Scope
+- Migrating the entire backlog of existing flat logs (focus is on new sessions).
+- Implementing a full-blown log viewer (basic metadata view only).