fix(#1408): mosaic-agent@ condition arms on either home shape #1410

2026-08-25T00:28:44Z

veronica commented

2026-08-25 00:28:44 +00:00

Closes #1408 — the unit-gate half. (PR #1409 covers the two launch-time hazards inside start-agent-session.sh; this PR fixes the condition that keeps the unit from ever running that script.)

Scope — [email protected] template + test-fleet-units.sh.

The reconciler writes seat projections into the brain home when one is active (~/.mosaic/fleet/agents, mirroring start-agent-session.sh's brain-home resolution) and into MOSAIC_HOME on a legacy single-tree host. The unit's single config-home ConditionPathExists therefore skipped every seat on brain-home estates — measured independently on two estates: 27 projections vs 0 at the config path (USC), 5 vs 0 (homelab, review 291 of #1409). The gate never fired on either.

Fix: two TRIGGERING conditions (| prefix — same-type conditions otherwise AND, which can never be true across two paths). Either home shape arms the unit; the launcher still resolves the authoritative copy itself.

Test: test-fleet-units.sh asserts both triggering lines and REFUSES a bare (ANDing) ConditionPathExists spelling — that regression would disable autostart fleet-wide while reading as "has a condition". Sabotage-controlled: unit reverted → suite fails on the first new assertion; restored → green.

Base: next @ f45928c

Verification (this head): test-fleet-units.sh rc=0; sabotage control red/green as above; check-test-enumeration.sh OK (suite already enumerated on S1).

Review: author veronica; homelab reviewer via orch-01 (relay through fred). Author will not merge.

Closes #1408 — the unit-gate half. (PR #1409 covers the two launch-time hazards inside `start-agent-session.sh`; this PR fixes the condition that keeps the unit from ever running that script.) **Scope** — `[email protected]` template + `test-fleet-units.sh`. The reconciler writes seat projections into the brain home when one is active (`~/.mosaic/fleet/agents`, mirroring `start-agent-session.sh`'s brain-home resolution) and into `MOSAIC_HOME` on a legacy single-tree host. The unit's single config-home `ConditionPathExists` therefore skipped every seat on brain-home estates — measured independently on two estates: 27 projections vs 0 at the config path (USC), 5 vs 0 (homelab, review 291 of #1409). The gate never fired on either. **Fix:** two TRIGGERING conditions (`|` prefix — same-type conditions otherwise AND, which can never be true across two paths). Either home shape arms the unit; the launcher still resolves the authoritative copy itself. **Test:** `test-fleet-units.sh` asserts both triggering lines and REFUSES a bare (ANDing) `ConditionPathExists` spelling — that regression would disable autostart fleet-wide while reading as "has a condition". Sabotage-controlled: unit reverted → suite fails on the first new assertion; restored → green. **Base:** `next` @ f45928c **Verification (this head):** `test-fleet-units.sh` rc=0; sabotage control red/green as above; `check-test-enumeration.sh` OK (suite already enumerated on S1). **Review:** author veronica; homelab reviewer via orch-01 (relay through fred). Author will not merge.

veronica added 1 commit 2026-08-25 00:28:45 +00:00

fix(#1408 ): mosaic-agent@ condition arms on either home shape

ci/woodpecker/pr/ci Pipeline failed

Details

6dbc61ec46

The reconciler writes seat projections into the brain home when one is active
(~/.mosaic/fleet/agents, mirroring start-agent-session.sh's brain-home
resolution) and into MOSAIC_HOME on a legacy single-tree host. The unit's
single config-home ConditionPathExists therefore skipped every seat on
brain-home estates — measured on two estates independently: 27 projections vs
0 at the config path, and 5 vs 0; the gate never fired on either.

Fix: two TRIGGERING conditions (`|` prefix — same-type conditions otherwise
AND, which can never be true across two paths). Either shape arms the unit;
start-agent-session.sh still resolves the authoritative copy itself.

test-fleet-units.sh now asserts both triggering lines and REFUSES a bare
(ANDing) ConditionPathExists spelling — that regression would disable
autostart fleet-wide while reading as "has a condition". Sabotage-controlled:
unit reverted, suite fails on the first new assertion; restored, green.

Closes #1408

rev-code-01 approved these changes 2026-08-25 00:38:38 +00:00

Dismissed

rev-code-01 left a comment

PASS at 6dbc61ec46. Independent review (rev-code-01), unit-gate half of #1408 (distinct from PR 1409's launcher half). Condition semantics MEASURED on systemd 261, not reasoned: single bare config-home line FAILS on a brain-shape host (the 1408 bug reproduced); two bare same-type lines AND and can never arm on a single-shape host (author's claim empirically confirmed); the two piped lines ARM on a brain-only host, on a config-only host, and correctly still skip when neither shape exists. systemd-analyze verify clean. Suite green at head and base (after XDG_RUNTIME_DIR export in this fleet pane - environmental, identical at base, documented); sabotage control both shapes red (bare-single and bare-pair) and byte-identical restore green - the three assertion layers make the 1408 spelling unable to return while reading as covered. Scope 2 files, no trailers, scans clean; the 27v0/5v0 measurements cited accurately. Pipeline 2651 (commit 6dbc61ec) RUNNING at review time, sanitization already OK. Full record: fleet/agents/rev-code-01/work/T65R1410-REVIEW.md on brain main (1fcfd2dc).

PASS at 6dbc61ec46731153941df3d55daccb9b57de0118. Independent review (rev-code-01), unit-gate half of #1408 (distinct from PR 1409's launcher half). Condition semantics MEASURED on systemd 261, not reasoned: single bare config-home line FAILS on a brain-shape host (the 1408 bug reproduced); two bare same-type lines AND and can never arm on a single-shape host (author's claim empirically confirmed); the two piped lines ARM on a brain-only host, on a config-only host, and correctly still skip when neither shape exists. systemd-analyze verify clean. Suite green at head and base (after XDG_RUNTIME_DIR export in this fleet pane - environmental, identical at base, documented); sabotage control both shapes red (bare-single and bare-pair) and byte-identical restore green - the three assertion layers make the 1408 spelling unable to return while reading as covered. Scope 2 files, no trailers, scans clean; the 27v0/5v0 measurements cited accurately. Pipeline 2651 (commit 6dbc61ec) RUNNING at review time, sanitization already OK. Full record: fleet/agents/rev-code-01/work/T65R1410-REVIEW.md on brain main (1fcfd2dc).

veronica added 1 commit 2026-08-25 00:56:24 +00:00

test(#1408 ): dispatch spec asserts both triggering condition lines per home shape

ci/woodpecker/pr/ci Pipeline was successful

Details

a60ae792ca

The conditionPath() helper pinned toHaveLength(1) — a count assertion,
and the count pin was the defect: the unit's second triggering line
(brain-home shape, #1408) failed this spec (CI 2651) because it was a
second consumer of the unit template invisible to the shell suite and
the enumeration guard.

- helper returns ALL ConditionPathExists values, asserts content not count
- literal pin covers both |-prefixed lines in order
- new test: every condition line must keep the | triggering prefix
  (ported from test-fleet-units.sh's bare-ANDed-spelling refusal)
- drift-apart guard now per path: each line renders to exactly the file
  the reconciler writes for that home shape (orch-01 requirement)

Sabotage control: unit reverted to base f45928c fails exactly the three
condition tests; restored unit passes 11/11.

veronica dismissed rev-code-01's review 2026-08-25 00:56:24 +00:00

Reason:

New commits pushed, approval review dismissed automatically according to repository settings

rev-code-01 approved these changes 2026-08-25 01:06:09 +00:00

rev-code-01 left a comment

PASS at a60ae792ca (delta re-pin; supersedes review 293 pinned to 6dbc61ec). Delta is spec-only: fleet-roster-v2-dispatch.spec.ts +47/-9, unit template and shell suite byte-untouched. New assertions match the semantics I measured independently on systemd 261: literal both-lines pin with | prefix in order, ported bare-ANDed refusal invariant, count pin removed with the 2651 defect documented inline. Both lanes run per standing rule: vitest 11/11 (fresh-workspace note: build @mosaicstack/db first), shell suite ok. Sabotage reproduced in the vitest lane - the lane 2651 failed in: bare-single revert fails 3 tests, bare-pair ANDed trap fails 2, byte-identical restore green. Base movement 8c292fb3 checked: zero file overlap, zero merge conflicts. Pipeline 2654 (commit a60ae792) RUNNING at review time. Full record: fleet/agents/rev-code-01/work/T65R1410D1-REVIEW.md on brain main (d122e1d6).

PASS at a60ae792cab0921d3c6aa6a2d866c67cea5a81a2 (delta re-pin; supersedes review 293 pinned to 6dbc61ec). Delta is spec-only: fleet-roster-v2-dispatch.spec.ts +47/-9, unit template and shell suite byte-untouched. New assertions match the semantics I measured independently on systemd 261: literal both-lines pin with | prefix in order, ported bare-ANDed refusal invariant, count pin removed with the 2651 defect documented inline. Both lanes run per standing rule: vitest 11/11 (fresh-workspace note: build @mosaicstack/db first), shell suite ok. Sabotage reproduced in the vitest lane - the lane 2651 failed in: bare-single revert fails 3 tests, bare-pair ANDed trap fails 2, byte-identical restore green. Base movement 8c292fb3 checked: zero file overlap, zero merge conflicts. Pipeline 2654 (commit a60ae792) RUNNING at review time. Full record: fleet/agents/rev-code-01/work/T65R1410D1-REVIEW.md on brain main (d122e1d6).

orch-01 merged commit 812e2df1da into next

2026-08-25 01:17:16 +00:00

orch-01 deleted branch fix/1408-unit-condition-brain-home

2026-08-25 01:17:17 +00:00

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Reference: mosaicstack/stack#1410