docs: add CHANGELOG.md covering v0.9.0 through v0.11.0

The CHANGELOG didn't exist; v0.11.0 felt too meaty to land without one
and starting from v0.10.0+ would have made the file feel rootless. The
format follows Keep a Changelog 1.1.0 with the standard Added /
Changed / Fixed / Removed sections per release plus a Migration block
when relevant.

v0.11.0 (2026-05-02) — full coverage of the card-theme system, HUD
overhaul, drag-feel polish (drop overlay, drop shadows, stock count
badge, unlocked foundations), the FiraMono fontdb fix, and the
schema-version bump that invalidates pre-v2 game_state.json saves on
launch. 982 tests, zero clippy.

v0.10.0 (2026-04-29) — PNG art pipeline, Bevy 0.15 → 0.18 migration,
kira 0.9 → 0.12 migration, Rust edition 2024 + MSRV 1.95, custom
font, JWT-secret-at-startup fix, SmartIpKeyExtractor, MessageReader
touch-input fix.

v0.9.0 (2026-04-28) — initial public-tagged release: workspace
structure, modal scaffold, design-token system, four-tier HUD,
progression, sync server, splash, focus rings, tooltips,
achievement integration tests, all the foundation work that
predates the card-theme rewrite.

README gains a Changelog section linking to the new file.

The bottom-of-file compare links use the corrected
github.com/funman300/Rusty_Solitaire URL so the rendered page on
GitHub auto-generates the correct diff views once the tags are
pushed.

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

CHANGELOG.md

@@ -0,0 +1,168 @@
+# Changelog
+
+All notable changes to Solitaire Quest are documented here. The format is
+based on [Keep a Changelog](https://keepachangelog.com/en/1.1.0/) and this
+project follows [Semantic Versioning](https://semver.org/).
+
+## [Unreleased]
+
+_Nothing yet._
+
+## [0.11.0] — 2026-05-02
+
+The biggest release since 0.10.0. Headline threads: a runtime card-theme
+system, an HUD restructure that reclaims the play surface, and a round of
+UX feel polish surfaced by smoke testing.
+
+### Added
+
+- **Runtime card-theme system** (CARD_PLAN phases 1–7).
+  - Bundled default theme ships in the binary via `embedded://` — 52
+    [hayeah/playing-cards-assets](https://github.com/hayeah/playing-cards-assets)
+    SVGs (MIT) plus a midnight-purple `back.svg` as original work.
+  - User themes live under `themes://` rooted at `user_theme_dir()`. Drop
+    a directory containing `theme.ron` + 53 SVGs and the registry picks
+    it up on next launch.
+  - Importer at `solitaire_engine::theme::import_theme(zip)` validates
+    archives (20 MB cap, zip-slip rejection, manifest validation, every
+    SVG round-tripped through the rasteriser) and atomically unpacks.
+  - Picker UI in **Settings → Cosmetic**; selection persists as
+    `selected_theme_id` and propagates to live sprites.
+- **Reserved HUD top band** (64 px) so cards no longer crowd the score
+  readout or action buttons; layout's `top_y` shifts down accordingly.
+- **Action-bar auto-fade** — buttons fade out when the cursor leaves the
+  band, fade back in when it returns. Lerp at ~167 ms.
+- **Visible drop-target overlay during drag** — a soft fill plus 3 px
+  outline drawn ABOVE stacked cards for every legal target (full fanned
+  column for tableaux, card-sized for foundations and empty tableaux).
+  Replaces the previously invisible pile-marker tint.
+- **Card drop shadows** — every card casts a neutral 25 % black shadow
+  with a 4 px halo; cards in the active drag set switch to a lifted
+  shadow (40 % alpha, larger offset, bigger halo).
+- **Stock remaining-count badge** — small `·N` chip at the top-right of
+  the stock pile so the player can see how close they are to a recycle.
+  Hides when the stock empties.
+
+### Changed
+
+- **Foundations are unlocked.** `PileType::Foundation(Suit)` →
+  `Foundation(u8)` (slot 0..3). The claimed suit is derived from the
+  bottom card via `Pile::claimed_suit()` — no separate field, no
+  claim-stuck-after-undo bugs. Any Ace lands in any empty slot, and the
+  slot then claims that suit. `next_auto_complete_move` prefers a
+  claim-matched slot before falling back to the first empty slot for
+  Aces. Empty foundation markers render as plain placeholders (no
+  "C/D/H/S").
+- **HUD selection label** and **hint toast** read `claimed_suit()` and
+  fall through to "Foundation N" / "move to foundation" only when the
+  slot is empty.
+
+### Fixed
+
+- **`shared_fontdb` now bundles FiraMono.** The hayeah SVGs reference
+  `Bitstream Vera Sans` and `Arial` by name. On minimal Linux installs
+  / fresh Wayland sessions / chroots where neither is installed AND the
+  CSS-generic aliases don't resolve, card rank/suit text vanished. The
+  bundled font is loaded into fontdb and pinned as every CSS generic's
+  target so the resolver always lands on something real. Surfaced when
+  a second-machine pull rendered cards without glyphs.
+- **Theme asset path resolution** — `AssetPath::resolve` (concatenates)
+  → `resolve_embed` (RFC 1808 sibling resolution). Was producing paths
+  like `…/theme.ron/hearts_4.svg` and failing to load every face SVG.
+- **Sync exit log spam** — `push_on_exit` silently no-ops on
+  `LocalOnlyProvider`'s `UnsupportedPlatform` instead of warn-spamming
+  every shutdown.
+- **usvg font-substitution warn spam** — custom `FontResolver.select_font`
+  appends `Family::SansSerif` and `Family::Serif` to every query so
+  unmatched named families silently fall through.
+
+### Migration
+
+- **In-progress saves invalidated.** `GameState.schema_version` bumped
+  1 → 2; pre-v2 `game_state.json` files silently fall through to "fresh
+  game on launch." Stats, progress, achievements, and settings live in
+  separate files and are unaffected.
+
+### Stats
+
+- 982 passing tests (was 819 at v0.10.0).
+- Zero clippy warnings under `--workspace --all-targets -- -D warnings`.
+
+## [0.10.0] — 2026-04-29
+
+PNG art pipeline plus a major dependency pass. The first release where
+the binary shipped with bundled artwork.
+
+### Added
+
+- **52 individual card face PNGs** generated via `solitaire_assetgen`.
+- **Custom font** (FiraMono-Medium) loaded via `AssetServer` at startup
+  through the new `FontPlugin`.
+- **Card backs and backgrounds** upgraded to 120×168 with richer
+  patterns.
+- **Ambient audio loop** wired through the kira mixer.
+- **Arch Linux PKGBUILDs** for the game client and sync server (under
+  the separate `solitaire-quest-pkgbuild` directory).
+- **Workspace README, CI workflow, migration guide.**
+
+### Changed
+
+- **Bevy 0.15 → 0.18** workspace migration.
+- **kira 0.9 → 0.12** audio backend migration.
+- **Edition 2024**, MSRV pinned to **Rust 1.95**.
+- **rand 0.9** upgrade.
+- **Card rendering** moved from `Text2d` overlay to PNG-backed
+  `Sprite` with face/back atlases; `Text2d` retained as a headless
+  fallback when `CardImageSet` is absent (tests under MinimalPlugins).
+- **Asset pipeline** switched from `include_bytes!()` for PNGs/TTFs to
+  runtime `AssetServer::load()` so artwork can be swapped without a
+  recompile. Audio remains embedded.
+- **Removed Google Play Games Services sync backend** — redundant with
+  the self-hosted server.
+
+### Fixed
+
+- **Server JWT secret** loaded at startup (was lazy, surfaced as
+  intermittent 500s).
+- **Daily-challenge race** in the server's seed-generation path.
+- **Rate limiter** switched to `SmartIpKeyExtractor` so the limit
+  applies per real client IP rather than per upstream proxy.
+- **Touch input** uses `MessageReader<TouchInput>` (Bevy 0.18 rename).
+- **Sync push/pull races** in async task scheduling.
+- **Hot-path allocations** reduced in card-rendering systems.
+- **Conflict report coverage** added for sync merge edge cases.
+
+### Stats
+
+- 819 passing tests at tag time.
+
+## [0.9.0] — 2026-04-28
+
+Initial public-tagged release. Established the workspace structure
+(`solitaire_core` / `_sync` / `_data` / `_engine` / `_server` / `_app` /
+`_assetgen`), the modal scaffold via `ui_modal`, the design-token system
+in `ui_theme`, and the four-tier HUD layout. Foundations were
+suit-locked at this point; cards rendered as `Text2d` rank/suit overlays
+with no PNG artwork yet.
+
+### Added
+
+- Klondike core (Draw One / Draw Three modes).
+- Progression system (XP, levels, 18 achievements, daily challenge,
+  weekly goals, special modes at level 5).
+- Self-hosted sync server (Axum + SQLite + JWT auth).
+- All 12 overlay screens migrated to the `ui_modal` scaffold with real
+  Primary/Secondary/Tertiary buttons.
+- Animation upgrades: `SmoothSnap` slide curves, scoped settle bounce,
+  deal jitter, win-cascade rotation.
+- Splash screen, focus rings (Phases 1–3), tooltips infrastructure +
+  HUD/Settings/popover applications, achievement integration tests,
+  destructive-confirm verb unification, leaderboard error/idle states,
+  first-launch empty-state polish, hit-target accessibility fix,
+  CREDITS.md, persistent window geometry, mode-launcher Home repurpose,
+  client-side sync round-trip integration tests.
+
+[Unreleased]: https://github.com/funman300/Rusty_Solitaire/compare/v0.11.0...HEAD
+[0.11.0]: https://github.com/funman300/Rusty_Solitaire/compare/v0.10.0...v0.11.0
+[0.10.0]: https://github.com/funman300/Rusty_Solitaire/compare/v0.9.0...v0.10.0
+[0.9.0]: https://github.com/funman300/Rusty_Solitaire/releases/tag/v0.9.0

README.md

@@ -113,6 +113,10 @@ default card back is original work; the UI font is FiraMono-Medium (OFL).
 All audio is synthesized programmatically by this project. See
 [CREDITS.md](CREDITS.md) for the full list and license details.
 
+## Changelog
+
+See [CHANGELOG.md](CHANGELOG.md).
+
 ## License
 
 MIT — see [LICENSE](LICENSE).