fix: serve login shell at direct route

dev/ACTIVE_TASK.json

@@ -1,5 +1,5 @@
 {
-  "task_file": "dev/tasks/DEV-000224-live-fleet-evidence.json",
-  "task_id": "DEV-000224",
+  "task_file": "dev/tasks/DEV-000225-login-route-fix.json",
+  "task_id": "DEV-000225",
   "task_revision": 1
 }

dev/tasks/DEV-000225-login-route-fix.json

@@ -0,0 +1,23 @@
+{
+  "task_id": "DEV-000225",
+  "task_revision": 1,
+  "architecture_revision": "ADR-0018",
+  "base_repo_revision": "e080c34a772caa5d256ab9f4ae0d2568bb8a7fb9",
+  "risk_tier": "E",
+  "intent": "Serve the existing chat/login shell at the direct /login route so users can reach authentication without a 404.",
+  "requirement_ids": ["UI login direct route", "authenticated acceptance entrypoint"],
+  "allowed_change_scope": {"modules": ["creator-web"], "paths": ["cmd/creator-web/server.go", "cmd/creator-web/server_test.go", "dev/ACTIVE_TASK.json", "dev/tasks/DEV-000225-login-route-fix.json"]},
+  "forbidden_change_scope": {"paths": ["architecture/**", "security/**", "database/**", "deploy/**", "contracts/**", "modules/**", "LLM-local/**"]},
+  "allowed_architecture_delta": {"new_cross_module_dependencies": 0, "new_canonical_owners": 0, "new_privileges": 0, "new_third_party_dependencies": 0, "new_database_owner_roles": 0},
+  "contracts": {"consume": ["existing embedded chat/login shell"], "may_change": ["HTTP route mapping only"]},
+  "semantic_owner": "creator-web route projection",
+  "canonical_state": ["none"],
+  "state_transitions": ["GET /login -> existing chat shell"],
+  "side_effects_and_privileges": ["none; GET only"],
+  "persistence_and_migrations": ["none"],
+  "failure_retry_restart": ["route remains deterministic and stateless"],
+  "assumptions": ["authentication behavior remains unchanged and is handled by the existing chat shell"],
+  "acceptance_scenarios": ["GET /login returns 200", "login inputs are present", "root route remains unchanged", "no credential values are added"],
+  "required_tests": ["go test", "go vet", "preflight", "check-diff", "check-architecture", "independent", "git diff --check", "CI", "production public health and /login check"],
+  "terminal_gap_states": ["BLOCKED_BY_SPEC_GAP"]
+}