docs(Sky): Add comprehensive changelog documenting v0.0 through v2.1

Populate CHANGELOG.md with full version history for the Sky UI component layer, documenting all releases from initial project inception (v0.0/Q2 2024) through the current Full Workbench Lift milestone (v2.1/Q2 2026).

The changelog captures: Astro and Vite migrations, Tauri workbench bootstrap, OTEL/PostHog telemetry integration, extension scanning retry logic, and architectural milestones including the migration from streaming Astro format and PascalCase import enforcement.

This ensures proper documentation of the editor UI component evolution for contributors and users.

Author: NikolaRHristov

CHANGELOG.md

@@ -1,3 +1,158 @@
-## 0.0.1
+# Changelog
 
-- Initial version
+All notable changes to Sky (UI Component Layer) are documented here.
+Format: [Keep a Changelog](https://keepachangelog.com/).
+
+## [v2.1] — Q2 2026: Full Workbench Lift
+
+### Added
+
+- `Source/Workbench/Electron/OTELBridge.ts` (153 lines) —
+  PerformanceObserver capturing `land:*` marks → OTLP/HTTP with retry logic
+- `Source/Workbench/Electron/PostHogBridge.ts` (159 lines) — error tracking
+  and analytics via CDN with per-component buffering and $component taxonomy
+- `Source/Workbench/TelemetryBridge.astro` (17 lines) — shared component
+  loading bridges
+- Terminal addon dependencies: xterm, xterm-addon-* promoted to stable releases
+- Extension scanning retry logic with node_modules fallback
+- Batch performance marks to prevent rate limiting
+
+### Changed
+
+- `enableWorkspaceTrust: false` across all 5 workbench profiles (Browser,
+  BrowserProxy, Electron, Mountain, index)
+- Workbench loading refactored to use `performance.mark()` instead of
+  console.log
+- Wind import path fixed: `@codeeditorland/wind/Target/Function/Install`
+- astro.config.ts extended with 83+ lines for telemetry and Vite OTLP proxy
+- Removed 327 lines of obsolete bootstrap code
+- Blob patch refactored to rewrite vscode-file:// URLs
+- PostHog surveys disabled; endpoint decision finalized
+- Astro 6.1.1 → 6.1.7, Vite 8.0.2 → 8.0.3
+
+## [v2.0] — Q1 2026: Editor Launch Sprint
+
+### Added
+
+- Astro 6 migration: 5.16.6 → 6.1.1 (March 21)
+- TypeScript 6.0.2 upgrade (March 26)
+- Vite 8.0.3 (from 7.3.0)
+
+### Changed
+
+- astro.config.ts major rewrite (98 lines added, 165 removed)
+- `Source/Function/CopyVSCode.js` refactored for VS Code asset handling
+- Deleted 80 HTML files from ephemeral Target/ (414 total deletions)
+- PascalCase import naming enforced in TypeScript config
+- Build pipeline integration simplified
+
+## [v1.3] — Q4 2025: Dependency Maintenance
+
+### Changed
+
+- Astro 5.14.1 → 5.16.6
+- Vite 7.1.6 → 7.3.0
+- 85-file gitattributes cleanup (binary/text normalization)
+- No source code changes; architecture stable
+
+## [v1.2] — Q3 2025: Full Stack Integration
+
+### Added
+
+- `jsconfig.json` — JavaScript configuration
+- `Source/Function/sky-ipc-router.ts` — module path fixes
+- `Source/Function/sky-host-bridge.ts`
+
+### Changed
+
+- Astro 5.10.1 → 5.14.1
+- nls.messages.js module updates
+- Dependency bumps: zod, vite, astro
+
+## [v1.1] — Q2 2025: Architecture Buildout
+
+**Critical milestone: Tauri workbench bootstrap.**
+
+### Added
+
+- `Source/Function/WorkBench.ts` (200 lines) — IPC shim, process env,
+  configuration resolution
+- `Source/Workbench/Default.astro` — entry point
+- `Source/Workbench/Browser.astro`
+- `Source/Workbench/BrowserTest.astro`
+- `Source/Workbench/Electron/Layout.astro`
+- `Source/pages/Application.astro` (replaces Wind.astro)
+- `Source/pages/Isolation.astro`
+- 37 keyboard layout files in `Target/Static/Application/keybinding/` (vi, en,
+  ru, de, fr, es, etc.)
+- codicon.CfDBERGQ.ttf font (86KB)
+- Application/nls.messages.js (330 lines)
+- Favicon overhaul
+
+### Changed
+
+- Workbench imports: `electron-sandbox` → `electron-browser`
+- Vite 6.3.5 → 7.0.0 (breaking change)
+- Astro 5.5.6 → 5.10.1
+
+### Removed
+
+- `/Source/Map/VSCode/Notation.json` (obsolete CSS mapping)
+- `/Source/pages/Wind.astro` (superseded by WorkBench.ts)
+- Application.astro.mjs, Wind.astro.mjs
+
+## [v1.0] — Q1 2025: Integration Phase
+
+### Changed
+
+- Astro 5.2.0 → 5.5.6
+- Vite 6.0.x → 6.2.4
+- Firebase 11.5.0 → 11.6.0
+- Stable architecture; minimal source changes
+
+## [v0.2] — Q4 2024: Architecture Solidification
+
+**Astro 5 migration complete.**
+
+### Added
+
+- .astro/ generated types and content collections
+- `/chunks/astro/server_*.mjs` SSR module format
+
+### Changed
+
+- Moved from `/Editor/index.html` + `/VSCode/index.html` to streaming Astro
+  server format
+- Removed vite manifest.json static linking; adopted Astro 5 prerendering
+- 1,900+ insertions in Target/ (new Astro SSR-compatible structure)
+- Astro 5.0.0 → 5.1.1
+- Vite 6.x integration
+- solid-devtools, @astrojs/solid-js 5.0.0+
+
+### Removed
+
+- Legacy `/_noop-*` middleware
+
+## [v0.1] — Q3 2024: Rapid Development
+
+### Added
+
+- `Source/pages/VSCode.astro` — VS Code rendering profile
+- `Source/pages/Editor.astro` — editor profile
+- Firebase integration for authentication
+
+### Changed
+
+- astro.config.ts extended for dual-profile builds
+- Large bundle reorganization: removed Monaco/highlight.js bundles (250+
+  manifest changes)
+
+## [v0.0] — Q2 2024: Project Inception
+
+### Added
+
+- Astro 4.x framework setup
+- SWUP page transitions (`Source/Script/SWUP.ts`)
+- Tailwind CSS foundation
+- Global.css and Base.css stylesheet system
+- `Source/pages/index.astro`