Rebrand: TeamClaw -> Clawmates (clawmates.work)

Full-depth rename per the approved plan; the 'claw' product vocabulary
(claws, /claws routes, clawId, Claw Chat) stays — it is now the brand.

- Display brand: Clawmates (manifest, titles, hero, login/rail logo
  'clawmates'); default host app.clawmates.work; registry
  ghcr.io/clawmates
- Crates tc-* -> cm-* (16 crates + all imports); binaries
  clawmates-server/broker/bundler; images clawmates/*; env prefix
  CLAWMATES_* (+ CM_TEST_DATABASE_URL / CM_LIVE_LLM); config
  clawmates.toml; helm chart deploy/helm/clawmates with clawmates-*
  resources; db names clawmates*; sockets /run/clawmates; cookie
  cm_session; kind cluster clawmates-test; seccomp node profile
  clawmates-agent-profile.json
- All 9 Playwright brand assertions updated in lockstep; historical
  spec document left untouched as the only remaining 'TeamClaw'
- Local env migrated: dev pg clawmates-dev-pg/clawmates_dev, shared
  test server clawmates-test-pg, kind cluster recreated with image +
  profile, compose images rebuilt under clawmates/*

Verified end to end: 161 Rust + 68 frontend tests, 29 Playwright
journeys, 4 live kind tests, helm/install/LOC/placeholder gates, and
the clean-room install rehearsal serving the clawmates login page from
a signed bundle of the rebuilt images.

Co-Authored-By: Claude Fable 5 <[email protected]>

crates/cm-safety/src/grants.rs

@@ -0,0 +1,23 @@
+use sqlx::PgPool;
+use uuid::Uuid;
+
+use crate::SafetyError;
+
+/// Consumes the single-use execution grant for an approval. The
+/// compare-and-swap guarantees a gated action can execute at most once,
+/// even against a compromised or racing caller (§15 defense in depth).
+pub async fn consume(pool: &PgPool, approval_id: Uuid) -> Result<(), SafetyError> {
+    let row = sqlx::query!(
+        "UPDATE execution_grants
+         SET consumed = true, consumed_at = now()
+         WHERE approval_id = $1 AND consumed = false
+         RETURNING id",
+        approval_id,
+    )
+    .fetch_optional(pool)
+    .await?;
+    if row.is_none() {
+        return Err(SafetyError::GrantUnavailable);
+    }
+    Ok(())
+}