feat: v1.2.0-rc.1 - IndieWeb Features Release Candidate

Complete implementation of v1.2.0 "IndieWeb Features" release.

## Phase 1: Custom Slugs
- Optional custom slug field in note creation form
- Auto-sanitization (lowercase, hyphens only)
- Uniqueness validation with auto-numbering
- Read-only after creation to preserve permalinks
- Matches Micropub mp-slug behavior

## Phase 2: Author Discovery + Microformats2
- Automatic h-card discovery from IndieAuth identity URL
- 24-hour caching with graceful fallback
- Never blocks login (per ADR-061)
- Complete h-entry, h-card, h-feed markup
- All required Microformats2 properties
- rel-me links for identity verification
- Passes IndieWeb validation

## Phase 3: Media Upload
- Upload up to 4 images per note (JPEG, PNG, GIF, WebP)
- Automatic optimization with Pillow
  - Auto-resize to 2048px
  - EXIF orientation correction
  - 95% quality compression
- Social media-style layout (media top, text below)
- Optional captions for accessibility
- Integration with all feed formats (RSS, ATOM, JSON Feed)
- Date-organized storage with UUID filenames
- Immutable caching (1 year)

## Database Changes
- migrations/006_add_author_profile.sql - Author discovery cache
- migrations/007_add_media_support.sql - Media storage

## New Modules
- starpunk/author_discovery.py - h-card discovery and caching
- starpunk/media.py - Image upload, validation, optimization

## Documentation
- 4 new ADRs (056, 057, 058, 061)
- Complete design specifications
- Developer Q&A with 40+ questions answered
- 3 implementation reports
- 3 architect reviews (all approved)

## Testing
- 56 new tests for v1.2.0 features
- 842 total tests in suite
- All v1.2.0 feature tests passing

## Dependencies
- Added: mf2py (Microformats2 parser)
- Added: Pillow (image processing)

Version: 1.2.0-rc.1

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

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

CHANGELOG.md

@@ -7,6 +7,52 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 
 ## [Unreleased]
 
+## [1.2.0-rc.1] - 2025-11-28
+
+### Added
+- **Custom Slug Input Field** - Web UI now supports custom slugs (v1.2.0 Phase 1)
+  - Added optional custom slug field to note creation form
+  - Slugs are read-only after creation to preserve permalinks
+  - Auto-validates and sanitizes slug format (lowercase, numbers, hyphens only)
+  - Shows helpful placeholder text and validation guidance
+  - Matches Micropub `mp-slug` behavior for consistency
+  - Falls back to auto-generation when field is left blank
+
+- **Author Profile Discovery** - Automatic h-card discovery from IndieAuth identity (v1.2.0 Phase 2)
+  - Discovers author information from user's IndieAuth profile URL on login
+  - Caches author h-card data (name, photo, bio, rel-me links) for 24 hours
+  - Uses mf2py library for reliable Microformats2 parsing
+  - Graceful fallback to domain name if discovery fails
+  - Never blocks login functionality (per ADR-061)
+  - Eliminates need for manual author configuration
+
+- **Complete Microformats2 Support** - Full IndieWeb h-entry, h-card, h-feed markup (v1.2.0 Phase 2)
+  - All notes display as proper h-entry with required properties (u-url, dt-published, e-content, p-author)
+  - Author h-card nested within each h-entry (not standalone)
+  - p-name property only added when note has explicit title (starts with # heading)
+  - u-uid and u-url match for notes (permalink stability)
+  - Homepage displays as h-feed with proper structure
+  - rel-me links from discovered profile added to HTML head
+  - dt-updated property shown when note is modified
+  - Passes Microformats2 validation (indiewebify.me compatible)
+
+- **Media Upload Support** - Image upload and display for notes (v1.2.0 Phase 3)
+  - Upload up to 4 images per note via web UI (JPEG, PNG, GIF, WebP)
+  - Automatic image optimization with Pillow library
+  - Rejects files over 10MB or dimensions over 4096x4096 pixels
+  - Auto-resizes images over 2048px (longest edge) to improve performance
+  - EXIF orientation correction ensures proper display
+  - Social media style layout: media displays at top, text content below
+  - Optional captions for accessibility (used as alt text)
+  - Media stored in date-organized folders (data/media/YYYY/MM/)
+  - UUID-based filenames prevent collisions
+  - Media included in all syndication feeds (RSS, ATOM, JSON Feed)
+  - RSS: HTML embedding in description
+  - ATOM: Both enclosures and HTML content
+  - JSON Feed: Native attachments array
+  - Multiple u-photo properties in Microformats2 markup
+  - Media files cached immutably (1 year) for performance
+
 ## [1.1.2] - 2025-11-28
 
 ### Fixed