Jordan Ritter 7e4dad042c fix(showcase): temp overlay isolation + slot-based port allocation ...

apply_isolation previously mutated docker-compose.local.yml and
local-ports.json in-place with .iso-bak backups. If the process crashed
the originals stayed corrupted with +200 port offsets, breaking all
subsequent showcase commands.

Now writes modified copies to a temp directory and overrides
COMPOSE_FILE/PORTS_FILE shell variables so downstream code reads from
the overlay. Originals are never touched. restore_isolation just removes
the temp dir.

Also replaces hardcoded +200 port offset with atomic mkdir-based slot
allocation. Two parallel --isolate runs now get different port ranges
(slot 0 = +200, slot 1 = +400, etc.) instead of colliding on the same
ports. Container names include the slot number for collision-free Docker
naming. Stale slots from crashed runs are reclaimed via PID liveness
checks and a 2-hour age fallback.

TS harness files (config.ts, lifecycle.ts, doctor.ts) honor
LOCAL_PORTS_FILE env var so they read offset ports from the temp overlay.

2026-05-01 00:08:16 -07:00

5.5 KiB

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