docs(v0.9.7): Add release notes and post-mortem

- Release notes for v0.9.7
- Post-mortem analysis
- Updated CHANGELOG

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

Author: hangtime79

CHANGELOG.md

@@ -7,6 +7,18 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 
 ## [Unreleased]
 
+## [0.9.7] - 2025-12-29
+
+### Added
+- Reset Zoom button in control bar returns zoom to 100% or viewport floor (#60)
+  - Circular arrow icon positioned left of Zoom Out button
+  - Independent zoom state per view mode preserved
+- Visual separator between Today button and zoom controls
+
+### Fixed
+- Dark mode: Today line and ball indicator now visible (changed to light gray)
+- Dark mode: Today date highlight text now readable (dark text on light background)
+
 ## [0.9.5] - 2025-12-29
 
 ### Added

plan/post-mortems/v0.9.7-post-mortem.md

@@ -0,0 +1,102 @@
+# Post-Mortem: v0.9.7
+
+**Branch:** `feature/v0.9.7-reset-zoom`
+**Type:** Feature
+**Duration:** 1 day (Started: 2025-12-29, Completed: 2025-12-29)
+**Outcome:** Success
+
+---
+
+## Summary
+
+Added Reset Zoom button to control bar and fixed dark mode today indicator visibility. Very clean implementation with single commit containing all changes.
+
+---
+
+## Scope
+
+### Planned
+- [x] Reset Zoom button (#60)
+
+### Delivered
+- [x] Reset Zoom button (#60)
+- [x] Dark mode today line visibility fix (bonus)
+- [x] Dark mode today date highlight text fix (bonus)
+- [x] Control bar spacing improvements (bonus)
+
+### Deferred Items
+None
+
+---
+
+## Commit Analysis
+
+| Metric | Value | Assessment |
+|--------|-------|------------|
+| Total commits | 1 | Excellent |
+| Feature commits | 1 | |
+| Fix/debug commits | 0 | |
+| Reverts | 0 | |
+| Churn ratio | 0% | Excellent |
+
+Very clean single-commit release. All changes (feature + bonus fixes) consolidated into one well-structured commit.
+
+---
+
+## What Went Well
+
+- Spec-first approach enabled clean implementation
+- Single commit for entire feature - no iteration needed
+- Bonus dark mode fixes identified and resolved during QA
+- User feedback integrated smoothly (spacing, today line color)
+
+---
+
+## What Didn't Go Well
+
+- Nothing significant
+
+---
+
+## Blockers Encountered
+
+None
+
+---
+
+## Technical Discoveries
+
+### Library Behavior
+- frappe-gantt uses `--g-today-highlight` CSS variable for both `.current-highlight` (line) and `.current-ball-highlight` (ball at top)
+- Our custom `--chart-today-line` variable only affected `.today-highlight`, not the library's selectors
+
+### Dark Mode
+- Light-colored today indicator (#C7C7C7) requires dark text override for the date highlight
+- CSS specificity: `.dark-theme .gantt-container .lower-text.current-date-highlight` needed to override existing white text rule
+
+---
+
+## CLI Docs Candidates
+
+None - no new platform learnings requiring documentation.
+
+---
+
+## Recommendations
+
+### For Next Release
+- Continue spec-first approach - working well
+
+### Process Improvements
+- None needed - current process is efficient
+
+### Technical Debt
+- None introduced
+
+---
+
+## Lessons Learned
+
+1. Consolidated commits are achievable with good planning
+2. QA catches theming edge cases that aren't obvious during development
+3. Library CSS variables sometimes need to be overridden alongside custom variables

plan/releases/v0.9.7-release-notes.md

@@ -0,0 +1,80 @@
+# Release Notes: v0.9.7
+
+**Release Date:** 2025-12-29
+**Type:** Feature
+**Branch:** `feature/v0.9.7-reset-zoom`
+
+---
+
+## Summary
+
+Adds a Reset Zoom button to quickly return zoom level to 100% (or viewport floor if larger), plus improves dark mode visibility for the today line indicator.
+
+---
+
+## Changes
+
+### Added
+- Reset Zoom button in control bar (#60)
+  - Circular arrow icon positioned left of Zoom Out button
+  - Resets current view's zoom to 100% (or viewport floor if larger)
+  - Each view mode maintains independent zoom state
+  - Tooltip: "Reset Zoom to 100%"
+- Visual separator between Today button and zoom controls
+
+### Fixed
+- Dark mode: Today line and ball indicator now visible (#C7C7C7 light gray)
+- Dark mode: Today date highlight text now readable (dark text on light background)
+
+---
+
+## Files Modified
+
+| File | Change Type | Description |
+|------|-------------|-------------|
+| `webapps/gantt-chart/body.html` | Modified | Added reset button with SVG icon, added control-spacer |
+| `webapps/gantt-chart/app.js` | Modified | Added resetZoom() function and event listener |
+| `resource/webapp/style.css` | Modified | Dark mode today indicator colors |
+| `plugin.json` | Modified | Version bump to 0.9.7 |
+| `plan/specs/feature-v0.9.7-spec.md` | Added | Feature specification |
+
+---
+
+## Testing
+
+- **Unit Tests:** Environment config issue (unrelated to JS/CSS changes)
+- **Manual Verification:**
+  - [x] Reset button appears left of Zoom Out button
+  - [x] Reset button has circular arrow icon
+  - [x] Tooltip shows "Reset Zoom to 100%"
+  - [x] Reset from 150%+ returns to 100%
+  - [x] Reset from 50% returns to 100%
+  - [x] Zoom indicator updates correctly after reset
+  - [x] Reset works independently per view mode
+  - [x] Dark mode styling works correctly
+  - [x] Today line visible in dark mode
+  - [x] Today date highlight text readable in dark mode
+
+---
+
+## Breaking Changes
+
+None
+
+---
+
+## Known Issues
+
+None
+
+---
+
+## Dependencies
+
+None
+
+---
+
+## Related Documents
+
+- Spec: `plan/specs/feature-v0.9.7-spec.md`