🏗️ MASTER P0: trios-ext revival — scaffold crate from zero (Closes #108 #152 #155 #156 #157 #189)

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🏗️ MASTER P0: trios-ext revival

Context: crates/trios-ext/extension/ does not exist. All prior "fixes" (#152, #155, #156, #157, #189) were closed without real scaffold. This issue tracks ground-up creation.

Branch & worktree (L10)

git worktree add ../trios-ext-revival -b fix/trios-ext-revival main
cd ../trios-ext-revival

Target structure

crates/trios-ext/
├── Cargo.toml                  # wasm32-unknown-unknown, dioxus 0.6, web-sys, wasm-bindgen
├── src/
│   ├── lib.rs                  # #[wasm_bindgen(start)] pub fn main()
│   ├── app.rs                  # Dioxus root component
│   ├── components/
│   │   ├── mod.rs
│   │   ├── sidebar.rs
│   │   ├── chat.rs
│   │   └── agent_list.rs
│   ├── mcp/
│   │   ├── mod.rs
│   │   ├── client.rs           # WebSocket → trios-server :9005/ws
│   │   └── protocol.rs         # MCP message types
│   └── bridge/
│       ├── mod.rs
│       └── comet.rs            # direct Comet ↔ ext channel (#157)
├── extension/
│   ├── manifest.json           # MV3, side_panel.default_path, action.default_icon{16,32,48,128}
│   ├── assets/
│   │   ├── logo.svg            # Trinity brand (from brandbook)
│   │   └── icons/
│   │       ├── 16.png
│   │       ├── 32.png
│   │       ├── 48.png
│   │       └── 128.png
│   ├── sidepanel.html          # ONLY <script type="module" src="/dist/trios_ext.js"></script>
│   ├── background.html         # WASM service worker loader (auto-generated)
│   └── styles/
│       └── brand.css           # --trinity-black:#000000; --trinity-accent:…
├── xtask/
│   ├── Cargo.toml
│   └── src/main.rs             # cargo xtask build → wasm-bindgen → dist/
└── .gitignore                  # dist/

Acceptance Criteria

• cargo build -p trios-ext --target wasm32-unknown-unknown succeeds
• cargo xtask build-ext produces crates/trios-ext/dist/ with generated trios_ext.js + trios_ext_bg.wasm
• find crates/trios-ext/extension -name "*.js" -not -path "*/dist/*" = empty (Closes 🚨 P0 VIOLATION: JS in extension/ — ALL extension code MUST be Rust → WASM (no .js handwritten) #156, 🦀 P0 EPIC: trios-ext FULL Rust→WASM rewrite — fix CSP inline-script + DELETE all handwritten .js (детальный план для агента) #189)
• extension/manifest.json references existing icons 16/32/48/128 + side_panel.default_path (Closes 🚨 P0: Chrome Extension — missing icons + popup not clickable (refs #108) #152)
• Trinity logo SVG + Total Black palette (#000000) applied in brand.css (Closes 🎨 P0: Brand enforcement — Trinity logo + Total Black palette + working chat (Chrome Extension) #155)
• MCP WebSocket client connects to ws://localhost:9005/ws and renders chat (Closes 🎨 P0: Brand enforcement — Trinity logo + Total Black palette + working chat (Chrome Extension) #155)
• Comet bridge via chrome.runtime.connect round-trips test message (Closes 🔌 P0: Comet ↔ Trios direct bridge — let the operator AI test the extension end-to-end (white screen blocker) #157)
• CI workflow .github/workflows/no-js.yml enforces zero handwritten JS (Closes 🦀 P0 EPIC: trios-ext FULL Rust→WASM rewrite — fix CSP inline-script + DELETE all handwritten .js (детальный план для агента) #189)
• cargo clippy --all-targets --all-features -- -D warnings = 0 (L3)
• cargo test --workspace green (L4)
• Unpacked extension loads in Chrome: icon visible, click opens sidepanel, chat sends + receives (Closes feat: crates/trios-ext — Chrome Extension (Dioxus/Wasm) сайдбар с чатом и MCP-мостом ко всем crates #108)

Commit plan (L8 PUSH FIRST — push after every commit)

1. feat(trios-ext): scaffold crate skeleton + Cargo.toml (refs #108)
2. feat(trios-ext): extension/manifest.json + icons 16/32/48/128 (Closes #152)
3. feat(trios-ext): Dioxus app + WASM entry point (refs #189)
4. feat(trios-ext): Trinity brand.css + logo.svg (refs #155)
5. feat(trios-ext): MCP WebSocket client + chat component (Closes #155)
6. feat(trios-ext): Comet bridge via chrome.runtime (Closes #157)
7. feat(trios-ext): xtask build pipeline (wasm-bindgen → dist/)
8. feat(ci): no-js.yml + manifest validator (Closes #156, Closes #189)
9. docs(trios-ext): README + load-unpacked instructions (Closes #108)

Single PR

Title: feat(trios-ext): full revival — Rust/Dioxus/WASM sidepanel + MCP bridge
Body: Closes #108 Closes #152 Closes #155 Closes #156 Closes #157 Closes #189

Verification (manual, before merge)

1. cargo xtask build-ext
2. Chrome → chrome://extensions → Load unpacked → crates/trios-ext/extension/
3. Icon visible in toolbar ✓
4. Click icon → sidepanel opens ✓
5. Logo + Total Black palette visible ✓
6. Chat input sends message → agent responds via WS ✓
7. Comet operator bridge round-trip ✓
8. DevTools console: zero CSP errors ✓

Constraints (reaffirmed)

• L1: no .sh files
• L2: PR must contain Closes #N
• L3: clippy zero warnings
• L4: tests pass
• L8: push after every commit
• L9: issue must be on TRINITY board, status In progress
• L10: worktree-first for any risky change
• English only in code/docs/issues

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Blocks: #108 #152 #155 #156 #157 #189
Assignee: DELTA (NATO call-sign)
TRINITY board: add → In progress