CookBot tools: workspace search, pantry, shopping list, catalog (#82, cook-md#293)

[dubadub]

Closes #82 (part 1 — CookCLI operations as tools). Client side of cook-md/cook-md#293 (pairs with cook-md/cook-md#309).

Six deterministic CookBot tools so the assistant stops re-reading files each turn and can reach the curated cook.md catalog.

Spec: docs/superpowers/specs/2026-08-18-cookbot-workspace-and-catalog-tools-design.md · Plan: docs/superpowers/plans/2026-08-18-cookbot-workspace-and-catalog-tools.md

Workspace tools (packages/cooklang, issue #82)

• searchRecipes — the real cook search (cooklang_find::search) via a new async native export; blank query lists every .cook/.menu; tag filter; workspace-relative paths.
• getPantry / checkPantry — config/pantry.conf parsed by the cooklang crate (sections, low stock; case-insensitive in-stock check). Missing file is a valid answer, other read errors are errors.
• generateShoppingList — headless list from recipes or a .menu (aisle-grouped, pantry-subtracted, sub-recipe refs resolved), or addToList: true to add to the live list and open the view. Validates before mutating; paths bounded to the workspace.
• Refactor (pure moves): RecipeReferenceResolver extracted from ShoppingListContribution; ShoppingListService.computeResult() extracted from regenerate().
• Native: searchRecipes / parsePantry / checkPantry exports; cooklang-find → 0.6.1 with default-features = false (avoids duplicate uniffi symbols; cooklang-reports still pulls 0.5.8 — collapses when it bumps).

Catalog tools (packages/cooklang-ai, #293)

• Proto mirrored from cookbot (SearchRecipeCatalog, GetCatalogRecipe); gRPC client + CookbotServerToolsService plumbing.
• searchRecipeCatalog — structured criteria (enums match the Rails vocabulary and the cookbot recipe-discovery skill) + keywords; returns Rails JSON verbatim.
• addCatalogRecipe — fetches the recipe and stages it through the chat changeset exactly like suggestFileContent (default path <Meal>/<Title>.cook); the recipe body never round-trips through the model.

Verification

• @theia/cooklang 151 + @theia/cooklang-ai 88 specs green; lint clean; cargo test/clippy clean; whole-monorepo npm run compile and app bundle OK.
• Pending: manual smoke in the running app against local Rails + cookbot (the five prompts in the plan's Task 12).

Release note

The cookbot server PR (cook-md/cook-md#309) ships prompts that name these tools — release this editor build first or together.