diff --git a/PROJECT_STATE.md b/PROJECT_STATE.md
index 74b7478e..a3edab4e 100644
--- a/PROJECT_STATE.md
+++ b/PROJECT_STATE.md
@@ -1,6 +1,6 @@
 # ThothII — Project State
 
-> Starting-point snapshot for new sessions. Last updated: 2026-07-14 (Qwen connectivity and Resume recovery live).
+> Starting-point snapshot for new sessions. Last updated: 2026-07-15 (complete activity timeline and CTE spacing live).
 > Point a fresh session here ("read PROJECT_STATE.md") before substantial work.
 
 ## Deployment — Docker locale (Profile A, co-located) — LIVE 2026-07-12
@@ -116,6 +116,38 @@ ThothII gira in Docker sul server co-locato, **embedded nel portale omics_portal
   exited 0 with `controller.abort()` in cleanup, preserving the gate, session cleanup, and exact
   settings-restoration evidence.
 
+### Complete activity timeline + CTE spacing — LIVE 2026-07-15
+
+- **Model activity is complete from F1.** The left panel now records the submitted prompt before
+  session creation completes, then projects thinking, assistant output, sanitized tool lifecycle,
+  reviewer gates, status, and turn lifecycle in chronological order. It remains in-memory only;
+  closing and reopening the panel does not discard it, while Resume intentionally starts a fresh
+  live timeline.
+- **Tool activity is a narrow public contract.** Only call id, tool name, and
+  `running`/`completed`/`failed` status cross Pi → backend → SSE. Updates, arguments, results,
+  commands, output, credentials, and raw errors stay server-side. Resume and SSE replay were also
+  hardened for process restarts, concurrent lifecycle requests, stale callbacks, cursor reset, and
+  multi-client reconnects.
+- **CTE plan layout uses real Tailwind 3 spacing.** Shared cards use concrete 16 px default / 12 px
+  compact padding utilities; F6 CTE headers and content use responsive 16/20 px edge padding.
+  Semantic ordered steps, single-boundary divided filter/table lists, long-value wrapping, and a
+  plain top-divider rationale preserve the artifact content while improving scanability.
+- **Verification/deploy (`2026-07-15T01:45:05+02:00`):** backend **202/202** and frontend
+  **280/280** passed; both TypeScript gates and production builds exited 0; the Impeccable layout
+  detector returned `[]`; `git diff --check` was clean. Compose rebuilt and force-recreated `core`
+  and `frontend`; core is healthy and frontend is running. Built and running image ids match: core
+  `sha256:1b98643d36f50488a6eebdc1203517406fce4fcc20f4b0bacfb7c8bf01bf1b91`, frontend
+  `sha256:5d35f59c6c45746fa4fa1deba9f63f31d28244fa6635a37a18cac911cc5d7585`.
+  The frontend entry changed from `index-CX4AkqeB.js` to `index-DcZviApa.js`, so only
+  `omics_portal-web-1` was restarted to refresh its indefinite manifest cache.
+- **Live local-Qwen activity smoke:** session
+  `2026-07-14-234408-activity-smoke-2026-07-14t23-44-07-508z` reached sanitized tool activity and
+  the first reviewer gate with no forbidden activity fields. A second no-thinking probe
+  (`2026-07-14-234546-no-thinking-activity-smoke-2026-07-14t23`) observed **0**
+  `activity_delta` events while still receiving **3** sanitized tool events and the gate. Both
+  probes closed with 200, deleted only their own session with 204, restored the exact saved
+  settings object, and left no Pi runtime or smoke session.
+
 ## What ThothII is
 
 A **human-in-the-loop datamart builder**: it turns a natural-language question into
@@ -170,7 +202,7 @@ All three layers' deps installed (`npm install` in each, `python -m venv + pip i
 - frontend: `cd frontend && npm run dev` (Vite; `VITE_BACKEND_URL` → backend)
 - harness install: `cd harness && python -m venv .venv && pip install -e ".[dev]"` → `tht` on PATH
 
-## How to test (green 2026-07-14: harness pytest 798 / gate JS 126 / backend 168 / frontend 256)
+## How to test (latest TS gates green 2026-07-15: backend 202 / frontend 280; harness 798 / gate JS 126 last recorded 2026-07-14)
 - harness: `cd harness && .venv/bin/pytest -q` (5 L2/real-DB tests are deselected by default)
 - backend: `cd backend && npx vitest run` · typecheck `npx tsc --noEmit -p .`
 - frontend: `cd frontend && npx vitest run` · typecheck `npx tsc -b` · e2e `npm run e2e` (Playwright)
diff --git a/brain/codebase/workflow-ui-contracts.md b/brain/codebase/workflow-ui-contracts.md
index 6b3ef000..64d285ce 100644
--- a/brain/codebase/workflow-ui-contracts.md
+++ b/brain/codebase/workflow-ui-contracts.md
@@ -23,3 +23,11 @@
   closes the old EventSource and opens the same session URL again. Failed Resume must not reconnect.
 - SSE endpoints are intentionally keep-alive. Browser cleanup and one-off probes must explicitly
   close the EventSource or cancel/abort the response reader after their terminal event.
+- The Model activity panel is an in-memory chronological projection of the prompt, thinking,
+  assistant output, sanitized tool lifecycle, reviewer gates, status messages, and turn lifecycle.
+  It starts with the local F1 prompt and is deliberately not persisted as chat history.
+- Pi tool events may cross the backend/client boundary only as call id, tool name, and
+  `running`/`completed`/`failed` status. Tool updates, arguments, partial/final results, commands,
+  raw output, and raw errors remain server-side.
+- The frontend uses Tailwind CSS 3.4. Shared primitives must use concrete Tailwind 3-compatible
+  spacing utilities; Tailwind 4 custom-spacing syntax can compile to no effective padding here.