chore(orchestration): remove the recipe-director layer

[zaridan]

What this does

Removes the experimental recipe-Orcastrator layer (added by PRs #9/#10/#11 + a layout fix) as a forward removal — a normal PR that deletes the recipe code. The Smart/LLM director, the F1–F4 orchestration bridge, and the Control Panel / Mission Control remain fully intact and working.

Removed (recipe-specific files + their tests)

• src/renderer/src/lib/recipe-director-launch.ts
• src/renderer/src/lib/recipe-director-recipes.ts
• src/renderer/src/lib/director-backend.ts (the DirectorBackend abstraction)
• src/renderer/src/components/director/DirectorTypePicker.tsx

Reverted recipe wiring in shared files (recipe parts only)

• OrchestratorLaunchModal.tsx — the "New Orcastrator" flow launches the Smart/LLM director directly via launchOrchestratorForProject again; no director-type picker, no recipe option.
• rpc/methods/orchestration.ts + shared/orchestration-binding.ts — dropped the recipe-only targetWorktree taskCreate param; taskCreate again stamps target_key from the caller terminal's worktree. The bridge/run/taskCreate plumbing the Smart director + Control Panel use is unchanged.
• i18n/locales/*.json — removed the DirectorTypePicker keys across all locales (en/es/ja/ko/zh).

Kept — shared infra the Smart director depends on

• lib/director-worktree-shell.ts — extracted out of orchestrator-launch.ts by RecipeDirectorBackend: compile recipe -> task DAG -> orchestration.run, no LLM in worktree #9 and still used by the surviving Smart-director launch path, so it stays (not inlined back).
• orchestrator-launch.ts (launchOrchestratorForProject), the F1–F4 bridge (per-run isolation, coordinator worktrees, preload run/taskCreate), the Mission Control live activity line, and the shipped-scope + focus-steal fixes.
• The OrchestratorsSidebarSection "+" styling/alignment fixes (fix(orchestration): match Orcastrators "+" weight to the Projects "+" #33) — not recipe code; the "+" already opens the launch modal directly.

Verification

• rg for recipe-director|RecipeDirector|DirectorBackend|DirectorTypePicker|getRecipes|director-backend over src/ → zero hits.
• typecheck ✓, vitest (20470 passed / 23 skipped) ✓, oxlint ✓, localization catalog + coverage ✓, electron-vite (build:desktop) ✓.
• The "+" / New-Orcastrator flow launches the Smart director directly (no picker); Control Panel, shipped-scope, activity line, and "+" alignment all present.

Recoverability

• The full pre-removal state is parked on origin/parked/recipe-director.
• This PR can be reverted to restore the recipe layer.

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