[plan-12] Provider & Extensibility Roadmap — net-new capabilities, not defects

[thedotmack]

[plan-12] Provider & Extensibility Roadmap — net-new capabilities, not defects

Defect

This is a roadmap master, not a defect cluster: it aggregates net-new capabilities across providers, ingestion/filtering, observability, auth, and UX so they ship as coherent slices rather than one-off PRs.

Children

Providers & auth

• Feature: Vertex AI support for Gemini provider #2522 — Vertex AI support for the Gemini provider (GCP service-account / ADC + Vertex endpoint)
• [Feature] Support an auth-helper command for refreshable gateway tokens (apiKeyHelper equivalent) #2704 — auth-helper command for refreshable gateway tokens (apiKeyHelper equivalent)

Ingestion & filtering

• Feature request: backfill / ingest existing Claude Code session JSONL files #2690 — backfill / ingest existing Claude Code session JSONL files
• Feature request: incremental scan skill for changes made outside a Claude session #2498 — incremental scan skill for changes made outside a Claude session
• Feature request: tool_response-level filter (file extension / size / content heuristic) to prevent Read-of-binary / Read-of-playwright-residual blowups #2463 — tool_response-level filter (extension / size / content heuristic) to prevent binary/Playwright blowups
• Feature: Per-directory disable support #2423 — per-directory disable support
• Option to write worktree observations to the parent project (detectWorktree already resolves it for reads) #2711 — option to write worktree observations to the parent project
• feat: skip/throttle subagent observations (esp. Dynamic Workflows workflow-subagent) — re-raise of #2303 #2736 — skip / throttle subagent observations (Dynamic Workflow workflow-subagent) — re-raise of feat: support filtering/skipping subagent observations (global toggle + per-type) #2303

Observability & logging

• MCP server has no grammar-introspection routes + worker provider lacks retry telemetry + no audit log #2566 — MCP grammar-introspection routes + worker provider retry telemetry + audit log
• Clarify logger audit policy and CI behavior #2513 — clarify logger audit policy and codify CI behavior
• TODO: logging cleanup — type-safe Component union, dead-log removal, noise reduction #2702 — logging cleanup: type-safe Component union, dead-log removal, noise reduction

UX / semantics / extensibility

• Feature request: i18n support for startup UI labels #2645 — i18n support for startup UI labels
• PreToolUse:Read context injection encourages LLM to treat Read as a turn boundary in connected tool sequences #2467 — PreToolUse:Read injection treated as a turn boundary in connected tool sequences (semantics call)
• Enable OpenHarness integration / allow PR from fork #2418 — enable OpenHarness integration / allow PR from fork

Fix sequence

Design doc: plans/12-provider-and-extensibility-roadmap.md. Ship per sub-area as independent slices; each slice carries its own tests. No single PR closes this master — it closes when its sub-areas land.

Out of scope

All defect clusters (plan-01..11, plan-13).