Two pieces of v3 plumbing — schema + the latent v1 chat.service bug.
Schema (db):
- Agent gains kind/providerSessionId/lastHeartbeatAt/status/inactiveSince
mirroring Llm's v1 lifecycle. Reuses LlmKind / LlmStatus enums; no
new types. Existing rows backfill kind=public/status=active so v1
CRUD is unaffected.
- @@index([kind, status]) for the GC sweep, @@index([providerSessionId])
for disconnect-cascade lookups.
- 4 new prisma-level tests cover defaults, persisting virtual fields,
the (kind, status) GC index, and providerSessionId lookups.
Total agent-schema tests: 20/20.
chat.service (mcpd) — fixes the v1 latent bug:
- LlmView's kind is now plumbed through prepareContext as ctx.llmKind.
- Two new private helpers, runOneInference / streamInference, branch
on ctx.llmKind: 'public' goes through the existing adapter
registry, 'virtual' relays through VirtualLlmService.enqueueInferTask
(mirrors the route-handler branch from v1 Stage 3).
- Streaming bridges VirtualLlmService's onChunk callback API to an
async iterator via a small queue + wake pattern.
- ChatService gains an optional virtualLlms constructor parameter;
main.ts wires it in. Older test wirings without it raise a clear
"virtualLlms dispatcher not wired" error when the row is virtual,
rather than silently falling through to the public path against an
empty URL.
This unblocks any Agent (public OR future v3-virtual) pinned to a
kind=virtual Llm. Pre-this-stage, those agents 502'd against the
empty url field.
Tests: 4 new chat-service-virtual-llm.test.ts cover the relay path
non-streaming, streaming, missing-dispatcher error, and rejection
surfacing. mcpd suite: 841/841 (was 833, +8 across stages 1+v3-Stage-1).
Workspace: 2054/2054 across 153 files.
Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
A Personality is a named overlay on top of an Agent — same agent,
same LLM, but a different bundle of prompts injected into the system
block at chat time. VLAN-on-ethernet semantics: ethernet still works
without VLAN; with a VLAN tag, frames are segmented but still ethernet.
Schema additions:
- Prompt.agentId (nullable FK + index, cascade on delete) so prompts
can attach directly to an agent without going through a project.
- Personality { id, name, description, agentId, priority } with
unique (name, agentId).
- PersonalityPrompt join table with per-binding priority override.
- Agent.defaultPersonalityId (SetNull on delete) so an agent can pick
one personality as the default when no --personality flag is passed.
Backwards-compatible by construction: every new column is nullable;
existing rows are valid as-is; the chat.service systemBlock changes
land in Stage 3.
8 new prisma-level assertions in agent-schema.test.ts cover unique
constraints, cascade behavior, the SetNull on defaultPersonalityId,
and shared-prompt-across-personalities. All 16 db tests pass; mcpd
typecheck + 777 mcpd unit tests still green.
Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
Introduces the persistence layer for the upcoming Agent feature: an LLM
persona pinned to a specific Llm, optionally attached to a Project, with
persisted chat threads/messages so conversations survive REPL exits.
Constraint shape:
- Agent.llm uses ON DELETE RESTRICT — deleting an Llm in active use fails.
- Agent.project uses ON DELETE SET NULL — agents survive project deletion.
- ChatThread → ChatMessage cascade so deleting an agent purges its history.
- ChatMessage @@unique([threadId, turnIndex]) gives append ordering even
under racing writers (services retry on collision).
LiteLLM-style per-call overrides will live in Agent.defaultParams (Json);
the loose extras Json field is reserved for future LoRA/tool-allowlist work.
Pinned vitest fileParallelism=false in @mcpctl/db: all suites share the
same Postgres, and adding a second suite exposed FK contention between a
clearAllTables in one file and a create in another. Per-test isolation
still comes from beforeEach.
Tests: 8/8 green in src/db/tests/agent-schema.test.ts (defaults, name
uniqueness, llm-in-use Restrict, project-delete SetNull, agent-delete
cascade, duplicate (threadId, turnIndex) blocked, tool-call payload
round-trip, lastTurnAt DESC ordering).
Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
