split ui.zig into src/ui/* facade (plan #656, source #652)

AGENTS.md

@@ -294,9 +294,11 @@ invincible/
 | Agent read-before-edit / file freshness | `lib/agent/fileFreshness.ts`, `lib/agent/pathLock.ts` (per-path apply serialization), `lib/agent/tools.ts`, `lib/agent/runAgent.ts`, [docs/sandbox.md](docs/sandbox.md) |
 | Logical agent cwd + workspace-root↔abs canonicalization (`change_dir` / session / default env; `canonicalizePath(R, p)` / `workspaceAbsToRel(R, abs)` / `resolvePathForTool(R, cwd, p)` / `rewriteExecRootToRel(R, text)` in `lib/agent/workPath.ts`) | `lib/agent/workPath.ts`, `lib/agent/tools.ts`, `lib/agent/runAgent.ts`, `lib/agent/agentBody.ts`, `lib/sandbox/config.ts`, `lib/sessionStore.ts`, `lib/harnessChat.ts`, `lib/agentApi.ts`, `lib/sessionCloudCaps.ts` (shared client-safe `sanitizeSessionCwd` + Redis-safe opaque id predicate), [docs/sandbox.md](docs/sandbox.md), [docs/session-model.md](docs/session-model.md), [docs/agent-stream.md](docs/agent-stream.md). Tool paths accept **in-jail absolute paths** on all FS tools + `change_dir` + `exec` cwd: an absolute under the per-binding jail root R (`resolved.value.workspaceRoot` → `RunAgentParams.workspaceRoot` → `createAgentTools`) is canonicalized to the same workspace-relative freshness key as its relative form (BYO + Vercel parity); out-of-jail absolutes and `..`/symlink escapes fail closed. Absolute paths under `R` that **appear in `exec` stdout/stderr** are likewise rewritten to workspace-relative (`rewriteExecRootToRel` in `lib/agent/workPath.ts`, applied to `result.stdout`/`result.stderr` separately) so `exec pwd` ≡ `pwd`/annotations; when `R` is unresolvable the exec output passes through byte-for-byte (fail-open), and rewrites are capped and never throw. When R is unresolvable (BYO daemon down/pre-v2 — `workspaceRoot === null`) absolute is rejected (“root unavailable — use workspace-relative”) while relative + cwd still work. Initial request/session `cwd` stays relative-only; `.` is the workspace-root default session start (there is no `SANDBOX_DEFAULT_CWD` env knob), `..` walks up toward the workspace root and errors only past it, and an **exact ancestor** of cwd re-roots cleanly (`change_dir invincible` from `cwd=invincible/docs` → `invincible`, not the phantom `invincible/docs/invincible`) while a name-prefix sibling is never re-rooted. P1/GAP-1 (#452/#330): `cwd` + `activeSandboxId` are **session-owned** and ride the Redis record (`meta.{logicalCwd,activeSandboxId}`). `activeSandboxId` is now **server-resolved** (routing override via `lib/tenancy/resolveSandbox.ts` `requestedSandboxId`), not carry-only. A **confirmed successful `change_dir`** is persisted as the session cwd even when the turn later cancels / times out / hard-errors (`lib/harnessChat.ts` host-side `liveCwd`); the success path still prefers the authoritative `agentResult.cwd`, and only a confirmed `change_dir` (never an errored one) is stored on a failed/aborted turn |
 | Cloud multi-device harness session (Redis multi-session, `/api/sessions*`, hybrid local+cloud; **phase 0 #515 envelope + Blob transcript carrier**) | `app/api/sessions/*` (+ `app/api/sessions/[id]/envelope/*`, `[id]/transcript/*`), `lib/sessionRepository.ts`, `lib/sessionCloudCaps.ts`, `lib/sessions/*` (+ `lib/sessions/blobStore.ts`, `blobStores.ts`), `lib/tenancy/harnessSessionsRedis.ts`, `lib/tenancy/harnessSessions.ts` (archive read + shared validator), `lib/di/index.ts` (root), `app/harness/HarnessHost.tsx`, `middleware.ts`, [docs/session-model.md](docs/session-model.md), [docs/bring-your-own.md](docs/bring-your-own.md), [SECURITY.md](SECURITY.md) — one-shot Postgres→Redis backfill: GHA **`sessions-redis-backfill`** (idempotent per-user marker); Postgres `harness_sessions` is a read-only archive. P1/GAP-1 (#452): session-carrier `meta.{logicalCwd,activeSandboxId}` folds into the PUT body and restores on pull/adopt; **plan #616 (source #610)** adds the reserved `meta.selectedModel` session carrier for the selected model pick (restore by id after the model catalog push; server **drops a poisoned value to unset**, never a 400). **Phase 0 (#515):** the transcript lives in **Vercel Blob** (`BLOB_READ_WRITE_TOKEN` / BYO S3-R2 seam) pointed to by `meta.transcriptPointer` on the small Redis envelope (`harness:envelope:*`); server mints short-lived scoped upload URLs for **client→Blob** uploads; legacy full-record GET stays for roll-forward while old blobs stay small. Envelope upsert/read: `PUT`/`GET /api/sessions/:id/envelope`; mint/read: `POST`/`GET /api/sessions/:id/transcript` |
-| Harness stream chrome (Thinking collapse/caps, live tools) | `lib/harnessChat.ts`, `native/harness/src/ui.zig` (Thinking kind; transcript band owner), `native/harness/src/transcript_split.zig` (collapsible left rail + session list in the transcript band), `native/harness/src/session_catalog.zig` (v17 catalog + pending switch), protocol **v17** in `lib/harnessBridge.ts` (Stop cancel v9; Thinking kind v8; tool-run kind 6 v10→live paint v11; skill-attach kind 7 v12; **status-slot store v13**; **turn-clock feed v14**; **v14 addendum** `inv_set_busy_tick`; **v16** model persist; **v17** session-rail catalog + pending switch) |
+
+| Harness stream chrome (Thinking collapse/caps, live tools) | `lib/harnessChat.ts`, `native/harness/src/ui.zig` (facade + `frame`; transcript band owner), `native/harness/src/ui/thinking.zig` (Thinking kind), `native/harness/src/transcript_split.zig` (collapsible left rail + session list in the transcript band), `native/harness/src/session_catalog.zig` (v17 catalog + pending switch), protocol **v17** in `lib/harnessBridge.ts` (Stop cancel v9; Thinking kind v8; tool-run kind 6 v10→live paint v11; skill-attach kind 7 v12; **status-slot store v13**; **turn-clock feed v14**; **v14 addendum** `inv_set_busy_tick`; **v16** model persist; **v17** session-rail catalog + pending switch) |
 | Workspace status bar (protocol v13 status-slot store; bridge overall **v14** — plan #538/#541 + Phase 2 git #540 + Phase 3 context/usage #539, **two-line bottom status bar under the composer — #554/#555/#570**) | `native/harness/src/{bridge,ui,model_picker,model_catalog}.zig` (status-slot store + two-line 64 px bar directly **below the composer**: **line 1** = identity (spinner · `h:{build-id}` · model menu) relocated from the deleted header band, **line 2** = `paintStatusSlots` right-aligned slot pack — header merged by plan #570; each line has explicit 32 px height so the model picker (`PICKER_TRIGGER_H`=32) fits and slots never clip; sandbox/cwd/git + context/usage slots — context painted generically via `STATUS_SLOT_DROP_ORDER`), `lib/harnessBridge.ts` (`StatusSlot`, `setStatusSlot`/`getStatusSlot`/`clearStatusSlot`/`clearStatusSlots`, `STATUS_SLOT_MAX_BYTES` mirror), `lib/harnessChat.ts` (`foldStatusSlots` — folds `activeSandboxId` + `cwd` + **context/usage** (`formatUsageSummary`, re-sanitized on read) after hydrate, after **every** agent turn — success **and** fail (403-clear / committed `change_dir` repaint the pack — PR #543), and **live mid-turn on tool results** (Phase 2 #627 / #625: a confirmed `change_dir` or successful `meta_sandbox_switch` repaints sandbox/cwd immediately, plus the host persists via `onSessionPatch`); context default **hidden** on missing usage, abort/cancel carries the prior honest value forward; host-ellipsized to the byte cap before the wire; `refreshGitStatusSlot` — host polls the read-only `GET /api/harness/status` probe on a ~10 s cadence **and** on-demand after a successful `exec` or `meta_sandbox_switch` mid-turn (not only the cadence), fail-soft keeps the last git value on transient error/429), `app/harness/HarnessHost.tsx` (Clear/New clears the pack; wires the git cadence + `onSessionPatch` → persist), `app/api/harness/status/route.ts` (read-only git probe: envelope-authoritative bind (`meta.activeSandboxId` wins over Redis-safe `?sandboxId=` carry), `resolveSandbox` → bounded argv-only read-only git at the bind workspace root via `lib/agent/statusProbe.ts`, per-instance rate cap `STATUS_PROBE_MIN_INTERVAL_MS`; middleware matcher + in-route `requireSessionUser` dual gate; never mutates a session/envelope — no Production write), `lib/agent/statusProbe.ts` (`STATUS_GIT_PROBE_OUT_MAX_BYTES`=512, fail-soft `{}`), `lib/sessionCloudCaps.ts` (`STATUS_SLOT_MAX_BYTES` = 96 + `STATUS_PROBE_MIN_INTERVAL_MS` = 2000 — client-safe single sources), **context/usage carrier:** `lib/agent/usageSummary.ts` (bounded provider-usage mapper `mapProviderUsage` / read-side `sanitizeUsageSummary` / host `formatUsageSummary`, `USAGE_SUMMARY_MAX_BYTES` = 96 — NEW cap), emitted **live mid-stream** from `finish` parts (aggregate only — never `finish-step` per-step counts) in `lib/agent/agentStream.ts` (SSE `usage` event), reconciled at the final `done.usage` / JSON result / chat result in `lib/agent/runAgent.ts` (+ `app/api/chat/route.ts`), parsed by `lib/agentApi.ts` / `lib/chatApi.ts`, mirrored on `SessionSnapshot.usage` (`lib/sessionStore.ts`; reserved cloud `meta.usage` JSON string, drop-to-unset on poison), docs: [docs/feature-divide.md](docs/feature-divide.md), [docs/harness-limits.md](docs/harness-limits.md), [docs/agent-stream.md](docs/agent-stream.md), [docs/session-model.md](docs/session-model.md) | |
-| Tool-run aggregation + expandable transcript control (#325) | `lib/agent/agentStream.ts` (backend `tool_result.preview` — bounded/redacted L2 detail), `lib/toolRun.ts` (encode/decode, host aggregation, `meaningfulDetail` preview→`detail`, `mergeToolRunPayloads`/`encodeToolRunPayload` hydrate coalesce), `lib/harnessChat.ts` (stream/JSON aggregation → kind 6 `tool_run`, **live-painted**: a tool event opens/grows ONE card immediately via `update_last` — grouping keys off the host's `lastRingRowIsToolRun` flag, the only ring writer: grow iff the last ring row is a tool-run, else a NEW card at `1`; a thinking/assistant/user/error row last is a separator; commit-once is removed; reload coalescing of consecutive `tool_run` rows via `coalesceToolRunMessages` in `pushSessionToBridge`), `lib/sessionStore.ts` role `tool_run`, `native/harness/src/rich/toolrun.zig` (decode), `native/harness/src/ui.zig` (`paintToolRun` — **headerless**: no `tools` kind band; 📋 copy on the header row; status glyphs as the single channel from embedded faces, `✓`/`✗` DejaVu symbols + `…` Noto; L2 preview in Vera Sans Mono for command/output tools **or any multi-line detail**, body otherwise; short single-line results → static label, no blank expander), `native/harness/src/bridge.zig` + `lib/harnessBridge.ts` (protocol **v11**; additive test-only ring readback `inv_message_*_at`), protocol **v11**; expand state + stick-to-bottom reuse dvui `reorder_tree.zig` / `scrolling.zig` idioms |
+| Tool-run aggregation + expandable transcript control (#325) | `lib/agent/agentStream.ts` (backend `tool_result.preview` — bounded/redacted L2 detail), `lib/toolRun.ts` (encode/decode, host aggregation, `meaningfulDetail` preview→`detail`, `mergeToolRunPayloads`/`encodeToolRunPayload` hydrate coalesce), `lib/harnessChat.ts` (stream/JSON aggregation → kind 6 `tool_run`, **live-painted**: a tool event opens/grows ONE card immediately via `update_last` — grouping keys off the host's `lastRingRowIsToolRun` flag, the only ring writer: grow iff the last ring row is a tool-run, else a NEW card at `1`; a thinking/assistant/user/error row last is a separator; commit-once is removed; reload coalescing of consecutive `tool_run` rows via `coalesceToolRunMessages` in `pushSessionToBridge`), `lib/sessionStore.ts` role `tool_run`, `native/harness/src/rich/toolrun.zig` (decode), `native/harness/src/ui/toolrun.zig` (`paintToolRun` — **headerless**: no `tools` kind band; 📋 copy on the header row; status glyphs as the single channel from embedded faces, `✓`/`✗` DejaVu symbols + `…` Noto; L2 preview in Vera Sans Mono for command/output tools **or any multi-line detail**, body otherwise; short single-line results → static label, no blank expander), `native/harness/src/bridge.zig` + `lib/harnessBridge.ts` (protocol **v11**; additive test-only ring readback `inv_message_*_at`), protocol **v11**; expand state + stick-to-bottom reuse dvui `reorder_tree.zig` / `scrolling.zig` idioms |
+
 | Builtin HTTPS fetch (`http_get`) | `lib/agent/httpFetch*.ts`, `lib/agent/vercelSandboxHttpRunner.ts`, `lib/net/publicUrlPolicy.ts`, `docs/builtin-http.md` — always-available when a running HTTP instance exists; attach-only (Settings → Sandbox) |
 | Tenancy schema / migrations | `db/schema.ts`, `db/migrations/` |
 | Tenancy crypto / first-run bootstrap | `lib/tenancy/*` |

docs/agent-stream.md

@@ -139,5 +139,5 @@ Product philosophy: **no live-tool / thinking-segment UX walls** — cancel with
 | Route SSE vs JSON | `app/api/agent/route.ts` |
 | Logical cwd parse / default | `lib/agent/agentBody.ts`, `lib/sandbox/config.ts`, `lib/agent/workPath.ts` |
 | Host consumer + collapse/caps | `lib/harnessChat.ts`, `lib/agentApi.ts` |
-| Thinking paint | `native/harness/src/ui.zig` (protocol v8 kind) |
+| Thinking paint | `native/harness/src/ui/thinking.zig` (protocol v8 kind) |
 | Feature divide | [feature-divide.md](feature-divide.md) |

docs/feature-divide.md

@@ -136,7 +136,7 @@ re-resolved each turn.
 | BYOK resolve | `lib/tenancy/resolveInference*.ts`, `lib/gateway/byokProviders.ts` |
 | Chat turn | `lib/harnessChat.ts` |
 | Session | `lib/sessionStore.ts`, `lib/sessionRepository.ts`, `lib/sessions/*` (incl. `blobStore.ts`/`blobStores.ts`), [session-model.md](session-model.md) |
-| Zig UI | `native/harness/src/ui.zig` |
+| Zig UI | `native/harness/src/ui.zig` (facade + `frame`) + `native/harness/src/ui/*.zig` |
 | Bridge Zig | `native/harness/src/bridge.zig` |
 | Theme | `native/harness/src/palette.zig` ↔ `lib/palette.ts` |
 | Export whitelist | `native/harness/build.zig` |