## What
- Runs `apps/webapp/scripts/runOpsLegacyGuard.ts --check` as its own PR
job (`runops-guard`), so code that reaches a run-graph table through the
control-plane Prisma client instead of the RunStore fails the build.
- Adds a `trigger-runops` oxlint plugin with two fast, in-editor rules
scoped to `apps/webapp/app`: one for direct `prisma.taskRun`-style
access, one for a control-plane client wired into a read-through slot.
These are the cheap fence; the guard is the type-aware gate.
- Fixes `CancelTaskRunService.callV1`: historical V1 runs are
legacy-resident, so its two finalize writes now go through
`runOpsLegacyPrisma` instead of the control-plane client (they'd miss
the row once legacy is a separate database).
- Regenerates the guard baseline, which had drifted stale (it referenced
files deleted in an earlier PR).
## Why
The guard existed but ran nowhere, so its baseline rotted and a real
residency gap (the V1 cancel writes) sat undetected. Wiring it into CI
turns it into a ratchet against new control-plane run-graph access.
## Verification
Local, against a clean regen: `oxfmt --check`, `oxlint .`, `guard
--check`, and `typecheck --filter webapp` all pass. Remaining baseline
entries are 4 batch-results router reads through type-opaque `as
PrismaReplicaClient` casts (correct at runtime, accepted) + 2 sanctioned
legacy annotations.
Daniel Sutton
285666290f