[codex] add automatic thread labels

[mtdewwolf]

Summary

Thread labels are now durable, automatically generated metadata for the existing thread lifecycle.

• Adds the canonical bug, feature, review, and new-build labels to contracts, event decisions, projections, SQLite persistence, and migration coverage.
• Generates a title and label on first turn and during title regeneration while preserving manually assigned labels.
• Adds manual label actions, label filtering, and label badges across web and mobile thread lists.
• Documents the feature and includes the requested before/after UI screenshots.

Why

Threads previously had no durable category, making it difficult to scan, filter, and recover the intent of a large thread list. This keeps classification close to the existing title-generation flow, persists it through the event-sourced server, and exposes the same behavior across clients.

Screenshots

Before	After

Validation

• vp test run --exclude '**/.t3/**' apps/server/src/orchestration/decider.labels.test.ts apps/server/src/orchestration/projector.labels.test.ts apps/server/src/persistence/Migrations/037_ProjectionThreadsLabels.test.ts apps/server/src/orchestration/Layers/ProjectionSnapshotQuery.test.ts apps/server/src/persistence/Layers/ProjectionRepositories.test.ts — 5 files, 17 tests passed.
• vp test run --exclude '**/.t3/**' apps/server/src/orchestration/Layers/ProviderCommandReactor.test.ts apps/server/src/textGeneration/TextGenerationPrompts.test.ts packages/shared/src/threadLabels.test.ts packages/client-runtime/src/state/threadReducer.test.ts apps/mobile/src/features/home/home-list-filter-menu.test.ts — 5 files, 101 tests passed.
• git diff --check FETCH_HEAD...HEAD — clean.

Model/harness: GPT-5.6 Luna via Cursor CLI.

Made with Cursor

Note

Add automatic thread label assignment and label filtering across web and mobile

• Introduces a constrained ThreadLabel type (bug, feature, review, new-build) in packages/contracts/src/thread.ts and shared display utilities in packages/shared/src/threadLabels.ts.
• LLM title-generation prompts (Claude, Codex, Cursor, Grok, OpenCode) are updated to also return a label; the first-turn and regeneration flows in ProviderCommandReactor apply the label to unlabeled threads via thread.meta.update with compare-and-set semantics.
• A SQLite migration (037_ProjectionThreadsLabels) adds a nullable label column to projection_threads; the projection pipeline, snapshot queries, and repositories all read/write this column.
• Web sidebar (v1 and v2) and mobile thread list rows display a label badge and expose a context-menu action to set or clear a label when the environment advertises threadLabels: true capability.
• Home screen, sidebar, and thread navigation sidebar all gain a Label filter menu to scope the visible thread list to a single label, hiding pending tasks when a label filter is active.
• Risk: existing thread rows will have label: null until the migration runs and the server re-generates or a user manually assigns a label.

^{Macroscope summarized 66e44fe.}

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[macroscopeapp]

Approvability

Verdict: Needs human review

This PR introduces a new thread labels feature with AI-generated classification, manual label management, and filtering across mobile and web apps. The scope includes database migration, modified text generation prompts, and cross-platform UI changes - substantial new functionality that warrants human review.

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[mtdewwolf]

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[cursor]

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