roboco/docs/map/db-migrations.md

db-migrations slice

Purpose

The DB layer is async SQLAlchemy 2.0 over PostgreSQL+asyncpg, with pgvector for the in-house RAG engine. Schema evolution is owned by an Alembic chain (001→059) that runs on every boot via init_db(); Base.metadata.create_all is no longer the source of truth — migration 017 reconciled the drift the other way. The ORM tables live in one fat module roboco/db/tables.py (~2.5k lines, 37 tables).

Files

Path	Role
roboco/db/__init__.py	Re-exports Base, session helpers, bootstrap_database, table classes.
roboco/db/base.py	Base (DeclarativeBase + naming convention), get_engine, get_session_factory, get_db (FastAPI dep), get_db_context, run_migrations, init_db, _db_has_* probes. Stamps a pre-Alembic DB at 001 then upgrades head.
roboco/db/tables.py	All 37 ORM table classes (single module).
roboco/db/seed.py	bootstrap_database() — runs init_db then seeds agents.
alembic/env.py	Async Alembic env; imports roboco.db.tables to register metadata, overrides sqlalchemy.url from settings, compare_type + compare_server_default on.
alembic.ini	Standard config; script_location=alembic, prepend_sys_path=., no URL (set in env.py).
alembic/versions/	59 migration files 001..059 (two share number 026 — chained, not a collision).

Key Symbols

Name	Kind	File:Line	Responsibility
Base	class	db/base.py:38	DeclarativeBase + MetaData naming convention.
get_engine	fn	db/base.py:46	Lazy singleton async engine (pool_pre_ping).
get_db	fn	db/base.py:70	FastAPI async session dependency.
get_db_context	fn	db/base.py	Out-of-request async session context.
init_db	fn	db/base.py:180	Boot entry: stamp pre-Alembic DB at 001 then run_migrations.
run_migrations	fn	db/base.py:141	Runs alembic upgrade head via command.upgrade in a thread.
bootstrap_database	fn	db/seed.py:282	init_db + seed default agents.
TaskTable	class	tables.py:157	Core task entity (largest table, drives lifecycle).
WorkSessionTable	class	tables.py:798	Per-claim session; single-active enforced by 047 partial-unique index.
AgentTable	class	tables.py:95	Agent identity, role, team, model provider assignment.
ProjectTable	class	tables.py:475	Git repo config + CI/watch/dep-update/quality_command/sandbox_services (057) cols.
AuditLogTable	class	tables.py:1940	Transition journey; details JSONB (010); composite query index (045).
AgentSpawnSessionTable	class	tables.py:2170	Per-spawn token totals; feeds usage dashboard.
ProjectConventionsCacheTable	class	tables.py:2442	Effective conventions map per (project, HEAD sha).
PlaybookTable	class	tables.py:721	Curated procedures (draft→approved→indexed).
RespawnTrackerTable	class	tables.py:1902	Durable PM-respawn circuit breaker mirror.
TaskCellProjectTable	class	tables.py:632	Per-cell project map for a MegaTask root-subtask (052).
WaitingRecordTable	class	tables.py:1872	Persisted dispatcher waiting records (restore at start).
IndexedDocumentTable	class	tables.py:1651	RAG corpus docs (added to chain by 017).
UserTable	class	tables.py:2603	Cloud-auth (FastAPI Users) single seeded CEO login row (058).
XCredentialsTable	class	tables.py:2650	Singleton Fernet-encrypted OAuth 1.0a secrets for the X engine (059).
XSeenMentionTable	class	tables.py:2675	X mentions-poll dedup ledger, keyed by mention id (059).
run_async_migrations	fn	env.py	Async online migration runner (NullPool).

Migration Chain

Num	File	What it adds/changes
001	001_initial_schema.py	All initial tables (agents, tasks, work_sessions, notifications, journals, audit_log, a2a_*); also originally created channels/sessions/messages, later dropped by the comms-teardown migration.
002	002_persistence_tables.py	Persistence tables + NotificationType.APPROVAL.
003	003_blocker_resolver_type.py	tasks.blocker_resolver_type + blockerresolvertype enum.
004	004_provider_routing.py	provider_configs + model_assignments; modelprovider/assignmentscope enums (create_type=False).
005	005_blocker_raised_by.py	tasks.blocker_raised_by.
006	006_gateway_columns.py	Gateway cols: claimant lock, heartbeat, pre-block snapshot, AC status, qa evidence flag.
007	007_gateway_triggers_table.py	gateway_triggers (dispatcher decision log).
008	008_align_skills.py	No-op (skills alignment done statically).
009	009_enum_reconcile.py	Reconcile every postgres enum with ORM StrEnum (lowercase) + new members.
010	010_audit_log_details_jsonb.py	audit_log.details JSON→JSONB.
011	011_drop_quarantined_state.py	Drop quarantined from taskstatus enum (phantom state, audit D15).
012	012_align_agentrole_foundation.py	Add agentrole/team enum values foundation declares.
013	013_drop_role_enum.py	Drop stray role enum (smoke run 2).
014	014_drop_pm_approvals.py	Drop unused tasks.pm_approvals.
015	015_drop_task_execution_outputs.py	Drop unused execution_log/outputs.
016	016_add_products_and_task_product_id.py	products + product_projects; tasks.product_id (team enum create_type=False).
017	017_reconcile_orm_schema_drift.py	Add ORM tables/columns the chain never had (e.g. indexed_documents).
018	018_task_project_id_nullable.py	tasks.project_id nullable (board/fan-out tasks carry product_id).
019	019_seed_default_providers.py	Idempotent seed of default model providers.
020	020_backfill_enum_values.py	Backfill ORM enum values the chain never added.
021	021_task_board_review_complete.py	tasks.board_review_complete (board-review handoff flag).
022	022_default_branch_master.py	Flip projects.default_branch default main→master.
023	023_prompter_tracking_columns.py	tasks.source + confirmed_by_human (prompter origin).
024	024_add_prompter_tables.py	prompter_sessions, prompter_messages, task_drafts.
025	025_agentrole_prompter.py	Add prompter to agentrole enum.
026a	026_completed_dependency_ids.py	tasks.completed_dependency_ids.
026b	026_token_usage_tables.py	agent_spawn_sessions + token_usage_snapshots (chained off 026a).
027	027_system_settings.py	system_settings key-value store.
028	028_seed_self_hosted_provider.py	Seed Self-Hosted (Ollama LOCAL) provider row.
029	029_project_quality_command.py	projects.quality_command (fast pre-submit gate).
030	030_rag_chunks_content_schema.py	Align RAG chunk tables with vector-store schema.
031	031_rag_chunks_fulltext.py	tsvector + GIN index on every chunk table (hybrid retrieval).
032	032_company_goals.py	company_goals singleton charter.
033	033_pitches.py	pitches (Board proposals → auto-provision).
034	034_agentrole_secretary.py	Add secretary to agentrole enum.
035	035_secretary_directives.py	secretary_directives (command audit + gate queue).
036	036_ac_ids_and_parent_refs.py	Per-criterion AC ids + child→parent AC linkage.
037	037_agentrole_pr_reviewer.py	Add pr_reviewer to agentrole enum.
038	038_modelprovider_grok.py	Add grok to modelprovider enum.
039	039_seed_grok_provider.py	Seed Grok (xAI) provider row.
040	040_awaiting_pr_review.py	Add awaiting_pr_review to taskstatus enum (PR-review gate).
041	041_structured_content_columns.py	pr_reviewer_notes, machine-marker split, structured content cols.
042	042_worksession_toolchain.py	work_sessions toolchain matching cols.
043	043_conventions_cache.py	project_conventions_cache.
044	044_convention_findings.py	project_convention_findings (violations feed).
045	045_observability_rework.py	tasks.revision_count + audit_log composite query index.
046	046_batch_intake.py	tasks.batch_id + collision descriptors (intends_to_touch, adds_migration, touches_shared).
047	047_ws_single_active.py	Partial-unique index: one ACTIVE work_session per task.
048	048_ci_watch_project_cols.py	Per-project CI-watch opt-in cols.
049	049_dep_update_project_cols.py	Per-project dep-update bot opt-in cols.
050	050_playbooks.py	playbooks table (curated procedures).
051	051_respawn_tracker.py	respawn_tracker (durable PM-respawn counter).
052	052_task_cell_projects.py	task_cell_projects (per-cell project map for MegaTask root-subtask; reuses team enum create_type=False).
053	053_playbook_archived_attr.py	playbooks.archived_by (UUID) + playbooks.archived_at (DateTime) — distinct retirement attribution; keeps approved_by/approved_at as approval-only provenance.
054	054_a2a_message_skill.py	a2a_messages.skill (String 100, nullable) — persists the capability a directed A2A message concerns; was silently dropped on send.
055	055_spawn_session_turns_tool_calls.py	agent_spawn_sessions.turns + .tool_calls (BigInteger, DEFAULT 0) — per-stint LLM iterations + tool invocations for the granular per-member performance metrics.
056	056_member_perf_daily.py	member_performance_daily — one row per (date, member_kind, agent_slug) scorecard rollup (incl. CEO as member_kind='ceo').
057	057_project_sandbox_services.py	projects.sandbox_services (ARRAY(String), nullable) — per-project opt-in for the sandboxed per-agent-spawn Postgres/Redis provisioner.
058	058_cloud_auth_users.py	users table (FastAPI Users schema) — the single seeded CEO login for cloud auth (ROBOCO_CLOUD_AUTH_ENABLED, default off).
059	059_x_credentials.py	x_credentials (singleton Fernet-encrypted OAuth 1.0a secrets) + x_seen_mentions (mentions-poll dedup ledger) — the X (Twitter) engine (ROBOCO_X_ENGINE_ENABLED, default off).

Data Flow

On boot, init_db() probes for application tables and alembic_version; if a pre-Alembic DB exists it stamps it at revision 001, then always runs run_migrations() → alembic upgrade head (in a thread via asyncio.to_thread). env.py imports roboco.db.tables so Base.metadata is fully populated, overrides sqlalchemy.url from settings.database_url, and runs online with an async NullPool engine. compare_type + compare_server_default are on so autogenerate drift is detectable. tables.py classes are the ORM mapping the migrations build; the domain layer reads them through roboco/models/ dataclasses, not the tables directly.

Mermaid

graph LR
  001-->002-->003-->004-->005-->006-->007-->008-->009-->010
  010-->011-->012-->013-->014-->015-->016-->017-->018-->019
  019-->020-->021-->022-->023-->024-->025-->026a-->026b-->027
  027-->028-->029-->030-->031-->032-->033-->034-->035-->036
  036-->037-->038-->039-->040-->041-->042-->043-->044-->045
  045-->046-->047-->048-->049-->050-->051-->052-->053-->054
  054-->055-->056-->057-->058-->059

Logical Tree

Migration chain 001..059
├── Initial schema
│   └── 001 initial schema (agents, tasks, work_sessions, notifications, journals, audit_log, a2a_*; also originally channels/sessions/messages, later dropped by the comms-teardown migration)
├── Persistence
│   └── 002 persistence tables + NotificationType.APPROVAL
├── Blocker metadata
│   ├── 003 blocker_resolver_type + blockerresolvertype enum
│   └── 005 blocker_raised_by
├── Provider routing & model assignments
│   ├── 004 provider_configs + model_assignments (modelprovider/assignmentscope enums)
│   ├── 019 seed default model providers
│   ├── 028 seed Self-Hosted (Ollama LOCAL) provider
│   ├── 038 add grok to modelprovider enum
│   └── 039 seed Grok (xAI) provider
├── Gateway
│   ├── 006 gateway columns (claimant lock, heartbeat, pre-block snapshot, AC status, qa evidence)
│   └── 007 gateway_triggers (dispatcher decision log)
├── Enum reconcile / widening
│   ├── 009 reconcile postgres enums with ORM StrEnum
│   ├── 011 drop quarantined from taskstatus enum
│   ├── 012 align agentrole/team enums with foundation
│   ├── 013 drop stray role enum
│   ├── 020 backfill ORM enum values
│   ├── 025 add prompter to agentrole enum
│   ├── 034 add secretary to agentrole enum
│   └── 037 add pr_reviewer to agentrole enum
├── Audit log
│   ├── 010 audit_log.details JSON→JSONB
│   └── 045 tasks.revision_count + audit_log composite query index
├── Cleanup / drops
│   ├── 014 drop unused tasks.pm_approvals
│   ├── 015 drop unused execution_log/outputs
│   └── 008 no-op (skills alignment done statically)
├── Products
│   ├── 016 products + product_projects; tasks.product_id (team enum create_type=False)
│   └── 018 tasks.project_id nullable
├── ORM drift reconcile
│   └── 017 add ORM tables/columns the chain never had (indexed_documents)
├── Board review
│   └── 021 tasks.board_review_complete
├── Project defaults
│   └── 022 flip projects.default_branch default main→master
├── Prompter tracking
│   ├── 023 tasks.source + confirmed_by_human
│   └── 024 prompter_sessions, prompter_messages, task_drafts
├── Dependency / token usage
│   ├── 026a tasks.completed_dependency_ids
│   └── 026b agent_spawn_sessions + token_usage_snapshots (chained off 026a)
├── System settings
│   └── 027 system_settings key-value store
├── Project quality
│   └── 029 projects.quality_command (fast pre-submit gate)
├── RAG
│   ├── 030 align RAG chunk tables with vector-store schema
│   └── 031 tsvector + GIN index on chunk tables (hybrid retrieval)
├── Strategy / provisioning
│   ├── 032 company_goals singleton charter
│   └── 033 pitches (Board proposals → auto-provision)
├── Secretary
│   └── 035 secretary_directives (command audit + gate queue)
├── Acceptance criteria
│   └── 036 per-criterion AC ids + child→parent AC linkage
├── PR review
│   ├── 040 add awaiting_pr_review to taskstatus enum
│   └── 041 pr_reviewer_notes, machine-marker split, structured content cols
├── Worksession toolchain
│   └── 042 work_sessions toolchain matching cols
├── Conventions standard
│   ├── 043 project_conventions_cache
│   └── 044 project_convention_findings (violations feed)
├── MegaTask / batch intake
│   ├── 046 tasks.batch_id + collision descriptors
│   └── 052 task_cell_projects (per-cell project map for MegaTask root-subtask)
├── WorkSession single-active
│   └── 047 partial-unique index: one ACTIVE work_session per task
├── Autonomous maintenance
│   ├── 048 per-project CI-watch opt-in cols
│   └── 049 per-project dep-update bot opt-in cols
├── Organizational memory
│   ├── 050 playbooks table (curated procedures)
│   └── 053 playbooks.archived_by + archived_at (distinct retirement attribution from approval)
├── Orchestrator runtime durability
│   └── 051 respawn_tracker (durable PM-respawn counter)
├── A2A messaging
│   └── 054 a2a_messages.skill (nullable; persists directed-A2A capability context)
├── Per-member performance metrics
│   ├── 055 agent_spawn_sessions.turns + .tool_calls (DEFAULT 0)
│   └── 056 member_performance_daily (per date/member_kind/agent_slug rollup)
├── Sandboxed dev DB/Redis
│   └── 057 projects.sandbox_services (per-project opt-in array)
├── Cloud auth
│   └── 058 users (FastAPI Users; single seeded CEO login)
└── X (Twitter) engine
    └── 059 x_credentials (singleton encrypted OAuth 1.0a) + x_seen_mentions (dedup ledger)

Dependencies

• PostgreSQL 15+ (NULLS NOT DISTINCT) — actually pgvector image on PG 16.
• pgvector extension for RAG cosine similarity (chunks_* tables, indexed_documents).
• asyncpg driver; SQLAlchemy 2.0 async.
• Alembic; migrations run on every orchestrator boot.

Entry Points

• init_db() / run_migrations() in roboco/db/base.py — boot-time alembic upgrade head.
• bootstrap_database() in roboco/db/seed.py — init + seed.
• alembic upgrade head (manual, in orchestrator container).
• conftest (tests) — ephemeral DB per test; runs migrations or create_all depending on PG availability.

Config Flags

• ROBOCO_DATABASE_* (host/port/user/password/name) — settings.database_url.
• ROBOCO_DATABASE_ECHO, pool size/timeout/recycle.
• No DB-specific feature flag; migrations always run. Feature flags (ROBOCO_CONVENTIONS_ENABLED, ROBOCO_CI_WATCH_ENABLED, ROBOCO_DEP_UPDATE_ENABLED, ROBOCO_RELEASE_MANAGER_ENABLED, ROBOCO_ORG_MEMORY_ENABLED) gate use of tables the migrations already added.

Gotchas

• sa.Enum(create_type=False) is silently ignored — the flag only works on postgresql.ENUM, not generic sa.Enum. Using sa.Enum re-emits CREATE TYPE and fails with "type already exists". 001/016/052 carry the live gotcha comment; 004/016 use the correct postgresql.ENUM(create_type=False). 001 itself uses sa.Enum(..., create_type=False) in spots — latent on a clean re-apply.
• Enum-parity gate can false-green — make quality runs scripts/verify_postgres_enums.py only against a migrated DB; an empty roboco DB (conftest ephemeral) or || echo masking hides drift. Fixed in 957fb522 but the gate is only as good as the DB it points at.
• 016 latent — the team enum member list under create_type=False is the original set, not the later-widened set; inert but misleading.
• Two files numbered 026 — not a collision: 026_token_usage_tables chains off 026_completed_dependency_ids. Renaming is risky (breaks down_revision refs).
• 052 reuses the team enum with create_type=False correctly — no new enum added; safe.
• 017 reconciled drift the other way — added ORM tables the chain had missed; create_all is no longer authoritative.

Drift from CLAUDE.md

• CLAUDE.md says "52 migrations 001..052" — now stale; chain is 001..059 (59 files). Does not mention the two 026 files (chained, not a conflict).
• CLAUDE.md cites migrations 043/046/047/048/049/050/051 by number in feature sections — all present and consistent.
• No factual drift found in the DB layer description.

Changes Since Baseline

git log fd10cc862c2020b3f639cdb686d427b0198a2441..HEAD -- alembic/ roboco/db/:

• 15effce0 Chore: 141 Gaps fill-in (#283) — adds migration 052 (task_cell_projects) + TaskCellProjectTable; logic-touching.

(Only one commit in range touches these paths.)

Post-snapshot updates (since 2026-06-29): 536bbb64 (Chore/all/logical gaps sweep #286) — adds migration 053 (playbooks.archived_by/archived_at), two new columns on PlaybookTable; d8a5bb48 ([chore] a2a hierarchy gate + skill persist) — adds migration 054 (a2a_messages.skill), one new column on A2AMessageTable, wired through send_chat_message and the A2AChatMessage model.

Delta 2026-07-03 (v0.17.0, 5 features): 055_spawn_session_turns_tool_calls (agent_spawn_sessions.turns/.tool_calls) + 056_member_perf_daily (member_performance_daily) predate this wave but were never appended to this doc; 057_project_sandbox_services adds projects.sandbox_services (sandboxed dev DB/Redis, ROBOCO_SANDBOX_DB_ENABLED); 058_cloud_auth_users adds users (UserTable, cloud auth, ROBOCO_CLOUD_AUTH_ENABLED); 059_x_credentials adds x_credentials (XCredentialsTable) + x_seen_mentions (XSeenMentionTable) (X engine, ROBOCO_X_ENGINE_ENABLED). Chain head is now 059.

Regression Risks

Title	File:Line	Claim	Severity
sa.Enum create_type silently dropped	alembic/versions/001_initial_schema.py:127,312	001 uses sa.Enum(..., create_type=False) which is a no-op on the generic Enum; a fresh re-apply on a clean DB can double-emit CREATE TYPE.	High
Enum-parity gate false-green	Makefile:540 + scripts/verify_postgres_enums.py	Gate skips on no-migrated-DB; an empty/mismatched roboco DB hides postgres-enum drift until a smoke run.	High
016 team enum stale member list	alembic/versions/016_add_products_and_task_product_id.py:38	postgresql.ENUM(create_type=False) member list is frozen at the original set; inert but masks later widening.	Medium
Missing pgvector extension blocks RAG	roboco/db/tables.py (chunks_*/indexed_documents)	Migrations assume pgvector installed; on a plain PG the vector columns fail and init_db aborts.	High
Two 026 files — rename hazard	alembic/versions/026_*.py	Renaming either 026 file breaks down_revision chain; autogenerate may mis-order.	Medium
047 partial-unique index assumes single-active	alembic/versions/047_ws_single_active.py	A duplicate ACTIVE session raises on the partial-unique index; service-layer guard must run first or claim crashes.	Medium
052 reuses team enum — order-dependent	alembic/versions/052_task_cell_projects.py:44	Depends on team enum already existing (from 001/016); a partial chain replay to 052 without 016 would fail.	Low
Single-head violation on re-apply	alembic/versions/017_reconcile_orm_schema_drift.py	017 adds tables/columns that create_all had created; on a DB built by create_all then stamped, 017 may double-create.	Medium

Health

The chain is linear and complete (001→059), with init_db running upgrade head on every boot so deployed schemas stay current. The two structural risks are the sa.Enum(create_type=False) no-op in 001 (latent on clean re-applies) and the enum-parity gate's dependence on a populated migrated DB. New migrations consistently use the postgresql.ENUM(create_type=False) pattern and ALTER TYPE ... ADD VALUE IF NOT EXISTS for enum widening, so recent additions are safe.