# PRD — Hermes Decommission & Tenant-1 Migration · Workstream X > **Status:** DRAFT for ratification · **Goals:** X1–X3 · **Doctrine:** NS-13, ASM-8 (Hermes untouched until verified parity) > Ratified direction (D2, 2026-07-09): Mosaic absorbs **all four** Hermes functions — messaging bridge, task board, permission relay, multi-platform reach. > **Debate pass 2026-07-09:** panel findings folded — this PRD took the heaviest rewrite (storage authority, migration census, memory-store hygiene, honest rollback scope). See `DEBATE-FINDINGS.md`. ## Deployment scope (D12/ASM-9) The trial runs in the **homelab**. Hermes and the primitive-era stack (`mos-claude.service`, jarvis-brain boards) live in the **USC/web1 environment**, which is untouched during the trial. This workstream therefore lands in two stages: **X-in-homelab** (prove parity where the fleet is native — mainly K/P/Q verification plus tenant-1 migration) and **X-at-USC** (post-trial adoption: apply the parity checklist to web1, migrate Mos-on-web1 to `mosaic-agent@orchestrator`, then decommission Hermes there, with `/src/infrastructure` GitOps updates in the same delivery set). **Trial go/no-go (D12/ASM-9 gate):** the homelab→USC promotion is **owner-judgment**, not an automated metric. The stage gate is: _Jason instantiates and operates the split-agent stack in the homelab and is satisfied with its operation._ Only on that explicit sign-off does X-at-USC begin. The capability ACs (AC-NS-8…11) are the evidence Jason weighs; they inform the decision but do not auto-trigger USC deployment. ## Mission Retire Hermes entirely. Mosaic becomes the platform for transport (Matrix connector), task board (native backlog + webUI/adapters), approvals (permission relay), and multi-platform reach (mautrix bridges). In the same arc, Jason's jarvis-brain flat-file data migrates into the product as **tenant #1**, making the product's PA feature set the dogfooded default. ## Parity map (what replaces what) | Hermes function | Mosaic replacement | Workstream | | ------------------------------------- | --------------------------------------------------------------------------------------------------------------------------------------------- | ---------- | | Messaging bridge (Discord/Telegram/…) | Matrix connector + mautrix bridges | K1, K2 | | Kanban / task board | Native Mosaic Backlog + webUI board + provider adapters | A\*, Q, W3 | | Permission relay (`permissions_*`) | Guard-rails engine + approval queue (Matrix + webUI) | P1–P3 | | Cross-platform user reach | mautrix bridges (agents speak Matrix only) | K2 | | Hermes MCP tools in agent sessions | **Per-tool equivalence table** (Gate Zero artifact): approvals → P2, board ops → Q1/A\*, messaging → K1 — not a generic "gateway API" gesture | P2, Q1, K1 | ## Requirements ### Parity checklist + cutover plan (X1) | ID | Requirement | | ----- | ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- | | X-R1 | A written, testable parity checklist per row above; each item verified in production before its Hermes counterpart is disabled. The checklist is seeded from a **pre-trial usage audit**: per-MCP-tool and per-capability call counts over a trailing window, plus an inventory of Hermes-held provider callbacks/webhooks and secrets. Parity rows with `n < 5` real invocations in the window cannot be "verified by traffic" — they get **scheduled drills in weeks 1–3** of the observation window instead of silent green. | | X-R1a | **Approval-routing cutover is per-agent atomic:** a cutover table states, per agent, the single moment its `permissions_*` path flips from Hermes to the P relay. No agent ever has two live approval paths; no approval window where neither path is live. | | X-R2 | Cutover is staged with rollback at every stage; Hermes runs untouched until AC-NS-11 is verified (ASM-8). **Rollback is honestly scoped (debate #16): it restores _transport_ (Hermes services + MCP registrations) — board/approval state created natively during the trial does NOT back-migrate.** The **point of no return is the first native-only card**; the runbook says so explicitly, and the abort path (below) is written before cutover, not during an incident. | | X-R3 | The Matrix charter's live-cutover rules apply: stated window, announce before/after, rollback ready. | ### Tenant-1 migration (X2) **Framing (ratified 2026-07-09, storage authority clarified by debate P0 #1):** jarvis-brain **is the P0 (prototype) Mosaic Stack** — its flat-file data layer is the zeroth implementation of what the product does properly. Migration is therefore _P0 → proper Mosaic Stack_. **Native Postgres is the sole authoritative store for every product entity** (consistent with workstream Q's "sole record" doctrine and NS-3/NS-4/NS-5). A flat-file backend, where offered, is a **derived, regenerated, read-only projection** — the same relationship generated views have to JSON in the P0 today — never a co-equal write target. Two distinct data classes migrate — they are not the same destination and neither is frozen: - **(a) PA data** (projects, tasks, events, tickets, knowledge) → product entities in the Jason workspace (Project/Task/Event/KnowledgeEntry), authoritative in Postgres; flat-file export available as a read-only projection. - **(b) Agent memory & operational knowledge** (runbooks, digests, scratchpads, OpenBrain thoughts) → the **enhanced memory subsystem (goal M1: vector DB + memory service)**. This flow stays **live and writable** throughout — it was never Hermes and must not be frozen by the PA cutover. | ID | Requirement | | ---- | -------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- | | X-R4 | **Stage 1 of the migrator is a machine-generated source census, not a hand-written file list** (debate P0 #5 — the hand list was already wrong about its own tree). The census walks the live repo (tracked + untracked), inventories every data path — `data/**`, all memory stores (`memory/`, `memories/`, `memory_store*`, `memory.md`, `brain.jsonl`, `jarvis.db`, digests), scratchpads, notes, prior-generation artifacts — and assigns each a disposition: `migrate-as-PA(entity type)` / `migrate-as-memory(M1 class)` / `derived-regenerate` / `retire-with-history`. **Any path dispositioned `unknown` blocks the run.** Stage 2 migrates per-disposition, preserving source ids in metadata; idempotency via anti-join on the shared `external_refs` table (Q-R8); named crash barriers at each phase boundary. A **field-map table** covers the full `brain.py` query surface (status, progress, due, priority, domain, notes, staleness) → product entity fields, so AC 2 is checkable field-by-field. | | X-R5 | Dry-run mode with a diffable report **generated from the census** (counts per disposition, per-entity field mapping, unmapped-field list — must be empty or explicitly waived); Jason ratifies the report before the real run (canonical-data gate — this is the one migration step that is his call). | | X-R6 | External sync jobs (GLPI, Google Calendar, ICS, Gmail, **Vikunja — disposition decided here: re-point or retire, not silently dropped**) each get a **written per-integration transition protocol**: freeze flat-file sync job → verify product integration live → re-point → verify → retire old job. **Provider-sourced events migrate FROM the provider, not from flat files** (flat files supply only brain-native events) — the provider join key is authoritative, so re-pointing cannot duplicate the calendar (debate #6). Calendar fixture (Codex): a DST-crossing recurring event with one moved and one cancelled occurrence, plus an all-day event, round-trips with zero duplicates and correct local times. | | X-R7 | Agent memory/operational knowledge (b) is migrated into the M1 memory subsystem **before** any jarvis-brain retirement; the memory write path stays continuously available (no read-only freeze of an active substrate). The census classifies every memory item: `ratified` / `superseded` / `draft` / `rejected` / `debate-artifact` / `protocol-normative` / `protocol-parametric`. **Parametric measurement artifacts (thresholds, seeds, drill timings, canary templates) are excluded from embedding** (§3.5 disposition — rules the agent is scored against stay retrievable; the knobs do not). Superseded/rejected items get **tombstones**, and supersession triggers re-embedding of affected summaries. **Retirement gate: a retrieval eval — ≥50 representative queries, ≥90% of baseline recall@5, plus negative queries (rejected/superseded content must NOT surface) — passes against M1 before any flat-file store goes read-only.** After cutover: write paths to retired stores are killed and a CI lint fails any reintroduction. Only once **both** (a) and (b) are migrated and verified is the jarvis-brain repo retired read-only (history preserved); generated views and brain.py retire. This closes the P0 prototype. | ### Decommission (X3) | ID | Requirement | | ---- | ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------ | | X-R8 | **Pre-stop evidence snapshot is a machine gate:** before Hermes stops, a checksummed snapshot of its state (board items, pending approvals, bridge registrations, per-tool usage counts) is captured and stored with the trial artifacts. The drill schedule (X-R1) and the credential-revocation report both **cite the snapshot checksum** — no snapshot, no stop. Then: services stopped, disabled, and removed from infra (GitOps: `/src/infrastructure` updated in the same delivery set); credentials revoked — the revocation report cites a **final scan** showing zero live references; MCP registrations removed from agent runtimes. | | X-R9 | **Bounded day-30 review** between stop and removal, pre-registered before cutover (dossier: what will be measured, panels cited, drill results attached — see W-R15/L1 for where the metrics live, `stack_version`-segmented so mid-window upgrades don't blur rates). The review records exactly one of three outcomes: **promote** (remove Hermes), **extend with named blockers** (each blocker a card with an owner), or **abort** (execute the pre-written abort runbook; transport-only rollback per X-R2). "Insufficient data" is a recordable outcome that forces extend — never a shrug into promote. Any in-window regression flips back per X-R2. | ## Machine gates on irreversible transitions (debate §3.1 agreed floor) Four **artifact-existence gates** — dumb, checkable, ungameable — sit on the irreversible transitions. Each is "the artifact exists and passes its check", not a scored rubric: 1. **Pre-stop snapshot** exists with valid checksum (X-R8) — gates Hermes stop. 2. **Census with zero `unknown` rows** exists (X-R4) — gates the PA migration run. 3. **Retrieval eval pass record** exists (X-R7) — gates memory-store retirement. 4. **All parity rows green-or-drilled** (X-R1: verified by traffic or by scheduled drill; no silent low-n green) — gates Hermes removal at day-30. The gate _superstructure_ beyond this floor (tiered blocking pack vs pre-registered dossier) is **OPEN — Jason** at ratification; convener recommendation in `DEBATE-FINDINGS.md` §3.1. ## Acceptance criteria 1. AC-NS-11: with Hermes stopped, no fleet or main-agent capability regresses. 2. `python tools/brain.py today`'s information content is fully answerable by Jarvis from the product workspace post-X2, verified field-by-field against the X-R4 field-map table. 3. Zero references to Hermes MCP tools in any active agent runtime config after X3. 4. The X-R6 calendar fixture (DST-crossing recurrence, moved + cancelled occurrence, all-day event) round-trips with zero duplicates. 5. The X-R7 retrieval eval passes against M1 before any memory store goes read-only; negative queries return no superseded/rejected content. 6. All four machine gates above have their artifacts on record before their respective transitions execute. ## Sequencing note X depends on the longest chains (K1→K2, P2, Q1, J2a→J2b, **M1** — X2 cannot complete class (b) without the memory subsystem existing). Dependencies are real DAG edges in `north-star-additions.yaml` (`X2 depends_on [J2a, P2, M1]`), not prose phases (debate P0 #3). Expected order of value delivery: J1–J4 (Jarvis on existing transport interim) → K1/J5 (Matrix room) → P2, W1–W3, Q1 in parallel → X1 checklist → X2 migration → K2 bridges → X3 decommission. - ASSUMPTION (interim transport): until K1 lands, Jarvis may run against the tmux connector (CLI/`agent send`) rather than standing up any Discord channel — keeps D1 (Matrix-first, no #jarvis Discord) intact.