chore: add LICENSE, README, VERSION, .editorconfig, expand .gitignore

Add project housekeeping files and sync manifest version to 0.1.0.
Also stages previously untracked chat summaries and score-ratio docs.

Co-authored-by: Cursor <cursoragent@cursor.com>

chat-summaries/2026-08-27_15-48-summary.md

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+# Recovery of Lost Uncommitted Changes
+
+**Date:** 2026-08-27
+**Task:** Restore working directory state after an overzealous `git reset --hard` that removed both the score ratio badge feature AND valuable uncommitted card UI polish work.
+
+## Context
+
+During the score ratio badge brainstorming session, the user decided to remove that feature. A `git reset --hard` was used but it also wiped uncommitted changes to `content/styles/cards.css` (278 lines) and `content/tweaks/cards.js` (93 lines) that contained extensive card UI improvements from the fonts session (`c6ee4c29`).
+
+## Recovery Process
+
+1. Analyzed all agent transcripts in `/agent-transcripts/` to find Write/StrReplace operations
+2. Initially recovered partial state from transcript `85d33c47` (card density, dark mode fixes)
+3. User reported this was insufficient — missing voting pill, rank badge, theme, and layout changes
+4. Found the bulk of missing work in transcript `c6ee4c29` (fonts session) — lines 78-227 contained extensive post-fonts card UI polishing
+5. Used a subagent to extract the final file state from `c6ee4c29`: base Write at line 185 + 11 subsequent StrReplace operations for CSS; Write at line 187 for JS
+6. Successfully reconstructed both files to their pre-reset state
+
+## Recovered Features (in cards.css)
+
+- Voting pill (`.midcol`) with capsule styling and border-radius per density
+- Rank badge watermark (`.rt-rank-badge`) anchored top-left
+- Custom selection system (`rt-selected`) replacing Reddit/RES classes
+- Voted pill tinting: orange for upvoted, purple for downvoted
+- Deselected pill dim (opacity: 0.45) / selected vibrant (opacity: 1)
+- Opposing arrow hue matching with reduced opacity
+- Dark mode variants for all selection/voted states
+- Bold post titles
+- Shadcn page backgrounds (light + dark)
+
+## Recovered Features (in cards.js)
+
+- Rank badge DOM repositioning with `rt-rank-badge` class
+- `initSelection()` — mousedown-based `rt-selected` class toggle
+- `applyDensity()` — density class management
+- Click-outside deselection
+
+## Final State
+
+- `cards.css`: 278 lines (+254/-22 vs committed)
+- `cards.js`: 93 lines (+33 vs committed)
+- Git status matches conversation-start state