docs: archive one-off documentation files

- Create docs/archive/ directory with README explaining purpose
- Move ANALYSIS_SUMMARY.md to archive
- Move FRAMEWORK_ANALYSIS.md to archive
- Move FILENAME_FIX_SUMMARY.md to archive
- Move IMPLEMENTATION_CHECKLIST.md to archive
- Move SETTINGS_IMPLEMENTATION.md to archive

Co-authored-by: christianlouis <361235+christianlouis@users.noreply.github.com>

docs/archive/README.md

@@ -0,0 +1,33 @@
+# Documentation Archive
+
+This directory contains historical documentation that was created for specific one-time tasks or analysis. These documents are preserved for reference but are not part of the ongoing documentation set.
+
+## Archived Documents
+
+### Analysis & Research
+- **`ANALYSIS_SUMMARY.md`** - One-off analysis document from a specific feature investigation
+- **`FRAMEWORK_ANALYSIS.md`** - Framework decision rationale and comparison document
+- **`SETTINGS_IMPLEMENTATION.md`** - Implementation notes for the settings management feature
+
+### Task-Specific Documents
+- **`IMPLEMENTATION_CHECKLIST.md`** - Task-specific checklist for a completed feature
+- **`FILENAME_FIX_SUMMARY.md`** - Summary of filename-related fixes
+
+## Why Archive?
+
+These documents provided value during specific development phases but:
+- Are not part of ongoing user or developer documentation
+- Document completed one-time tasks
+- Contain information that has been integrated into other docs
+- Were created for specific decision-making processes
+
+## Active Documentation
+
+For current, maintained documentation, see:
+- **Root Level**: `README.md`, `CONTRIBUTING.md`, `CHANGELOG.md`, `ROADMAP.md`
+- **`docs/`**: User guides, API docs, deployment guides, configuration references
+- **`AGENTIC_CODING.md`**: Developer and AI agent guidelines
+
+---
+
+*Last Updated: 2026-02-08*