chore: bump S800-RC1 v3.6.0 build_date 2026-07-02; fix groq failover priority

fix: sync registry+fallback fixes da A (registry.py line692, LLM_TIMEOUT, _ANALYTICAL_VERBS_RE)

sync: 149 file da Baida98/AI@0ea4f2b6 (2026-07-01 10:39 UTC)

sync: 149 file da Baida98/AI@9d8daf2e (2026-07-01 10:33 UTC)

sync: 149 file da Baida98/AI@7ad4598a (2026-07-01 10:31 UTC)

sync: 149 file da Baida98/AI@882b077e (2026-07-01 10:29 UTC)

sync: 149 file da Baida98/AI@37832425 (2026-07-01 10:26 UTC)

fix: add missing router = APIRouter() in agent_loop_routes.py

fix: add missing "from fastapi import APIRouter" in _agent_helpers.py

fix: remove escaped quotes SyntaxError in api/files.py

deploy: full backend sync for Node C [Kernel Restore]

sync: 120 file da Baida98/AI@8a5e0256 (2026-06-23 22:38 UTC) [GAP-MEM1 memory-space]