The enforcement half of the lease broker ships and denies; the promotion half
has no production caller anywhere in the package. Verified across 0.0.48, 0.0.49
and 0.0.50-next.2207: begin_verification / observe_receipt / promote_lease are
invoked only by broker-test-client.ts, the acceptance spec, unit tests, and two
probes under docs/.
Consequence: no lease on any host can reach VERIFIED, so mutator-gate denies
every mutator with MUTATOR_UNVERIFIED via a gate that nothing shipped can
satisfy. Runtimes that enforce the gate in-process (pi, via mosaic-extension's
tool_call hook) are bricked for mutators; runtimes whose gate is wired through a
settings hook escape only when that hook is absent — i.e. by being ungated.
This adds the client. It implements protocol steps 1, 4 and 5:
1. begin_verification -> mint a challenge, return the exact receipt text
2. the MODEL emits that text verbatim as its entire latest message
3. the runtime adapter ships that message to the observer socket
4. observe_receipt -> PENDING_PROMOTION
5. promote_lease -> VERIFIED
Step 2 is deliberately NOT implemented here, and that is the point.
is_verbatim_receipt uses hmac.compare_digest against the exact minted string —
explicitly "not a transcript substring" — which makes promotion a LIVENESS
PROOF: it requires a live model that received the challenge in its context and
echoed it exactly.
receipt-observer-client.py will post ANY string as the latest assistant message.
A promotion client that posted its own receipt would satisfy the broker while
proving nothing — a gate-disabler indistinguishable from a working fix unless
someone specifically looks. Emitting the receipt therefore belongs to the runtime
adapter, where a real model turn happens. A local diagnostic that posts its own
receipt exists in the operator's repo and is deliberately NOT shipped here.
The construction binds the exact normative source bytes, so a VERIFIED lease
means "this agent is running THIS law", not merely "this session id is known".
h_source/h_payload are derived by importing the framework's own
normative_fragments.build_payload rather than reimplementing it: the broker
derives them the same way and any divergence yields PAYLOAD_BINDING_MISMATCH.
There must be exactly one implementation.
session_identity() prefers the generation FILE over the env var, matching
lease_generation.py. Sending a generation higher than the broker's would revoke
the session's own authority (daemon.py:342-344), so it never guesses.
Verified end-to-end on sb-it-1-dt under a real lease-gated anchor: a mutator
denied rc=2 MUTATOR_UNVERIFIED, then begin -> observe -> promote -> VERIFIED,
then the same mutator allowed rc=0. Negative controls pass: a fresh session is
still denied, and an unrelated session still reads UNVERIFIED — promotion is
per-session and does not leak.
Still open: adapter wiring for step 2. Lazy promotion on first mutator attempt
avoids colliding with the Constitution's first-response mode declaration, since
compare_digest requires the receipt to be the WHOLE message.
Mosaic wrote into the operator's harness base installs — ~/.claude,
~/.pi/agent, ~/.codex, ~/.config/opencode — for settings, instructions, and a
102-symlink skill farm per harness. Any experiment with hooks or gating
therefore mutated the operator's own tooling, and a broken framework change
could take out the very harness needed to repair it.
Harness home isolation
----------------------
Each runtime now reads config from a dedicated mosaic-owned home via the
harness's own config-dir variable:
claude CLAUDE_CONFIG_DIR ~/.config/mosaic/.claude
pi PI_CODING_AGENT_DIR ~/.config/mosaic/.pi (replaces ~/.pi/agent)
codex CODEX_HOME ~/.config/mosaic/.codex
opencode XDG_CONFIG_HOME ~/.config/mosaic/.opencode
These paths are manifest-UNKNOWN, so rule 3 (#791) resolves them to operator
ownership and a keep-mode upgrade can neither overwrite nor prune them.
A bare `claude` / `pi` keeps its own config AND auth, making it a structural
break-glass rather than one depending on restoring a file under pressure.
opencode is blunter than the rest: it has no dedicated variable and follows XDG,
so isolation also relocates XDG lookups for anything it spawns. Documented in
place.
mosaic-sync-skills now links into those homes and cleans the legacy farms it
previously planted in base installs. Ownership is proven by RESOLUTION, not by
name — only symlinks resolving inside the canonical/local skills dirs are
removed, mirroring the refusal already in commands/skill.js. Verified against a
real install: codex's own .system directory survived while its 102 mosaic links
were removed. Both resolution prefixes are length-checked first; an empty prefix
would make "$resolved" == "$prefix/"* match every absolute path and delete
foreign symlinks.
Immutable launch record
-----------------------
Every launch now appends one record to fleet/run/sessions/events.ndjson before
exec. Mandatory, mechanical, no model involvement.
pi rewrites its own argv to a bare `pi`, so /proc/<pid>/cmdline destroys the
launch evidence — that has already produced a confident wrong diagnosis ("this
agent bypassed the launcher"), disproved only by the parent's argv and only
because the parent had not yet exited. A record written before exec is the only
place this survives.
The path is the #797 Runtime Session Ledger, already operator-classified and
already covered by test-upgrade-manifest-guard.sh, which seeds it and proves a
populated ledger survives keep-mode upgrades — but nothing shipped ever wrote
it. This implements it in the shape that guard already asserts (0600 files under
a 0700 dir).
`mosaic` writes session.launch; launch-runtime.py appends lease.register with
the broker session id and activation capability. They correlate by an explicit
MOSAIC_LAUNCH_ID, never by pid: execRuntime uses spawnSync, so the runtime is a
child with a different pid.
Records normative fragment digests (CONSTITUTION/AGENTS/SOUL/USER/STANDARDS/
TOOLS/RUNTIME) — the same set the broker hashes for promotion, so drift is
mechanically detectable rather than a matter of judgement.
Credential-safe: env is captured as PRESENT NAMES ONLY, and argv values over
256 bytes become a sha256 + length rather than being inlined.
Also fixes CLI_VERSION resolution: '@mosaicstack/mosaic/package.json' is not in
the package exports map and always throws ERR_PACKAGE_PATH_NOT_EXPORTED.
resolveTool() uses that same failing specifier, which is why its documented
preference for bundled tools over the deployed ~/.config/mosaic copy has never
once applied — noted in place, not fixed here.
Verified on sb-it-1-dt: isolated homes written and base installs byte-identical
for all four harnesses; 408 legacy symlinks removed with 1 foreign entry
preserved; launch records paired across the spawn boundary. typecheck shows zero
errors in launch.ts (the @mosaicstack/types failures are pre-existing and
reproduce on a pristine origin/main worktree).
invariant_r_unittest.py (landing with the lease-remediation stack, PR
#1109) hard-requires an installed `pi` binary pinned to the measured
version: it boots Pi's real tool registry and proves the broker's
read-only carve-out resolves to real, unshadowed builtins. Absent
runtime fails loud by design — so CI must provide it.
Install @earendil-works/[email protected].1 (the canonical Pi;
@mariozechner/* is embedded-legacy) at step level in the test step.
Step-level rather than baked into Dockerfile.ci because ci-image
publishes are currently blocked on registry UNAUTHORIZED; baking it in
is the follow-up once registry auth is fixed, at which point this line
degrades to a fast no-op guard like the openssl line above it.
Co-Authored-By: Claude Fable 5 <[email protected]>
Claude-Session: https://claude.ai/code/session_01Dtdjx4Gxude9fwyLezCrhh
Add the Slice-Zero catalog and selection HTTP surfaces for P3 Task 3:
GET /api/harnesses, GET /api/harnesses/:harnessId/catalog,
GET+PUT /api/chat/preferences/selection. Scope is always server-derived
via scopeFromUser(CurrentUser); selection tuples are validated against the
live catalog with no fallback substitution and persisted in a transitional
owner-scoped in-memory store. HarnessModule is wired into AppModule.
Co-Authored-By: Claude Opus 4.8 <[email protected]>
Claude-Session: https://claude.ai/code/session_01ESFAnh2t9HmLwng8oW95St
The `format` step of .woodpecker/ci.yml:89 (`pnpm format:check`) failed on
pipeline 2111 for this branch. Reproduced on a bench with the lockfile-pinned
[email protected] against the repo .prettierrc and .prettierignore, using CI's
exact glob: WRITING-STYLE.md was the only failing file.
The change is mechanical and semantically null: markdown table cell padding
and `*emphasis*` -> `_emphasis_`. Verified by normalizing both revisions
(whitespace removed, `_`/`*` folded, table rules collapsed) — the results are
byte-identical.
This does not address the prose findings published on #965 (P1-P4); those
await a ruling. The `test` step also failed on 2111, on a base ~40 commits
stale — attribution for that failure needs this rerun, and is not claimed here.
Co-authored-by: mos-dt-0 <[email protected]>
root cause: emitDecoratorMetadata reflected the third constructor parameter as Function and Nest attempted to resolve it
fix: optional HANDOFF_ID_FACTORY injection token, no production provider, preserving undefined -> crypto.randomUUID() default and unchanged positional construction
TDD: real CoordModule red at Function index [2], then green; test overrides only unrelated AuthGuard because its AUTH provider comes from AppModule's global AuthModule context
Closes#1145
§5 sent the agent to read direct|friendly|formal in USER.md, but the builder
renders prose bullets, not the token — the documented lookup could not key on
the shipped file. Table now keys on the leading bullet USER.md actually
contains. Also: 'concise, technical' -> 'concise, structured' (drop the round-1
residual value name from a rule-9 guide). Docs-only, no code, no scope growth.
Written-by: jarvis (dragon-lin)
Co-Authored-By: Claude Fable 5 <[email protected]>
F1: defaults/USER.md is never installed (generated from templates/USER.md.template
via buildCommunicationPrefs). Editing it was a no-op asserting a phantom setting —
exactly the false-green §2 warns against. Reverted.
F2: the framework already has communicationStyle (direct|friendly|formal). §5 now
maps THOSE values to output instead of inventing technical|prose|brief (rule 9).
Minor: §6 states no mechanical prose check exists today; rule 1 points at §3.4.
Written-by: jarvis (dragon-lin)
Co-Authored-By: Claude Fable 5 <[email protected]>
Adds the agent output standard to the framework SOT so it injects at launch and
is selectable per user (closes the gap: it lived only as a jarvis-brain lab doc + issue #960).
- guides/WRITING-STYLE.md: MOS-STE (adapted ASD-STE100) for docs, Google Style for code,
verification-artifact emphasis, absolute user-voice carve-out. Written in MOS-STE.
- defaults/STANDARDS.md: Output-standards block (always injected via the prompting contract).
- defaults/AGENTS.md: routing row so writing/doc/comms work reaches the guide.
- defaults/USER.md: per-user 'Comms style' option (technical|prose|brief), default technical.
Refs mosaicstack/stack#960. Owner directive (Jason, 2026-07-30): docs->adapted ASD-STE100,
code->Google style, resumes/personal carved out, comms style a per-user choice.
Written-by: jarvis (dragon-lin)
Co-Authored-By: Claude Fable 5 <[email protected]>
First-pass structural reference for the Vite SPA migration (apps/web): dual-app
tree during migration, shared lib/ networking layer, origin-relative/same-origin
serving model, build scripts, the P1-P6 increment map, and the #1145 P5 blocker.
Living doc — details to be fleshed out by follow-up.
Co-Authored-By: Claude Opus 4.8 <[email protected]>
Claude-Session: https://claude.ai/code/session_01ESFAnh2t9HmLwng8oW95St
Bring the chat experience into the Vite/React-Router SPA on the exact typed
Socket.IO /chat contract from @mosaicstack/types, replacing the /chat
placeholder behind AuthGuard. Surfaces message:ack (with an accessible
status), agent:start, streamed agent:text/agent:thinking, tool start/end
status, agent:end with usage, session:info (thinking controls + routing
decision), commands:manifest, command:result, command:approval (with a
one-time approved-run affordance), system:reload (refreshing the rendered
manifest), and error, and emits message/abort/set:thinking/command:execute/
command:approve with exact payloads.
The gateway does not guarantee message:ack is the first event for a new
conversation (session:info, and error on auth/session-creation failure, can
both arrive first) — conversation-scoped events now adopt the conversation
from whichever scoped event names it first while a send is pending, then
filter everything else against that established conversation. A typed error
stops streaming instead of leaving Stop stuck active; agent:end no longer
appends an empty assistant turn when there is no text or thinking; and a
second message can no longer be sent while a turn is streaming.
Command approval is now integrity-checked end to end: only one
command:approve request may be outstanding at a time (a concurrent request
is ignored rather than overwriting the pending command/args), a stale or
mismatched command:approval response cannot replace active approval state,
and running an approved command clears its approval state immediately (via
a ref, before React re-renders) so a double-click cannot replay
command:execute.
The `/chat` socket is now typed at a single boundary: apps/web/src/lib/
socket.ts narrows socket.io-client's untyped `io()` return value to
`ChatSocket` (Socket<ServerToClientEvents, ClientToServerEvents>) once, at
creation, via the one assertion the library's types force; every consumer
(use-chat-connection.ts) then gets fully checked `on`/`emit` calls with no
further casts. The shared contract types live in the new
apps/web/src/lib/chat-contract.ts (replacing the old spa/chat/types.ts
shim), which re-exports them via type-only imports resolved directly
against packages/types/src (apps/web has no @mosaicstack/types package
dependency, so this stays source-only and is erased at compile time —
no package manifest or lockfile is touched). The two recorded-event test
suites now drive a shared, typed fake socket
(spa/chat/test-support/fake-chat-socket.ts) instead of an untyped
`(event: string, payload: unknown)` harness, so a wrong event name or
malformed payload fails to compile.
Jason Woltje
be-coder-08andJason Woltje
mos-dt-0
jason.woltje
Mos
shaggy