anti ab1151ee7f fix(fleet): read existing fleet from fleet_deckies, not State["deployment"] (BUG-2) ...

The web deploy collision-guard read the existing fleet from the DB
State["deployment"] key, while the UI/get_deckies() read decnet-state.json.
A fleet established via CLI/seed lands in neither path the guard consulted,
so existing_deckies was empty, the additive guard ran blind, and the
reconciler tore the running fleet down to the single submitted decky
(BUG-2: silent fleet wipe, HTTP 202, no warning).

Converge both reads on fleet_deckies — the engine-mirrored table written on
every deploy/teardown (CLI and web), which fleet/reconciler.py already
documents as the store the orchestrator, dashboard, and REST API see. Each
row's decky_config column is a full DeckyConfig dump, so it rehydrates
losslessly into the collision-guard input. The handler also commits the
intended fleet to fleet_deckies synchronously so rapid sequential deploys
read a current fleet and the dashboard observes the new shape immediately.

State["deployment"] is retained for now — the mutate handlers and the
mutator engine still coordinate through it; consolidating them is tracked
in development/ADR-001-FLEET-SOURCE-OF-TRUTH.md (open question 7).

Tests seed fleet_deckies directly (also modelling the CLI-seeded scenario)
rather than chaining real deploys through the skipped contract-test path.

2026-06-12 23:52:20 -04:00

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