AI panel: abort the in-flight request when the rule changes

[dgunter]

What

Changing the rule (typing, picking an example, loading a candidate) cleared the AI panel's result but did not stop the request already in flight. The button kept spinning, a reply for the previous rule could be shown next to the new one, and after a parse error the panel read "Asking the model" beside "Classify a rule first" (seen while capturing screenshots).

How

• lib/inflight.ts: a small RequestGuard that hands each request an AbortSignal and an isCurrent() check; beginning a new request or cancelling aborts the previous one and marks it stale.
• AiPanel: the rule-change effect now cancels the guard and clears busy; every action passes the signal and only applies its outcome while still current. Abort errors are swallowed, and the streaming fallback no longer fires for an aborted stream.
• api.ts: llmExplain, llmSuggestAttack, llmCandidates accept an optional signal.

Tests

inflight.test.ts covers supersede, cancel, idempotent cancel, and abort-error detection. tsc, vitest (26), oxlint, vite build green. The one oxlint warning on the panel's effect predates this change.

🤖 Generated with Claude Code

[github-actions]

SonarCloud analysis · PR #23

Quality gate: ❌ Failed · Open in SonarCloud

Condition	Actual	Required	Status
Reliability rating (new code)	A	≤ A	✅
Security rating (new code)	A	≤ A	✅
Maintainability rating (new code)	A	≤ A	✅
Coverage (new code)	22.4%	≥ 80.0%	❌
Duplication (new code)	0.0%	≤ 3.0%	✅
Security hotspots reviewed	100.0%	≥ 100.0%	✅

Open issues on new code: 1

Severity	Quality	Location	Message	Rule
HIGH	Maintainability	frontend/src/components/AiPanel.tsx:69	Refactor this function to reduce its Cognitive Complexity from 27 to the 15 allowed.	typescript:S3776

Machine-readable issue list

[
 {
  "key": "AaBtQgsYF4Lo6wYGnqYR",
  "severity": "HIGH",
  "qualities": [
   "Maintainability"
  ],
  "path": "frontend/src/components/AiPanel.tsx",
  "line": 69,
  "message": "Refactor this function to reduce its Cognitive Complexity from 27 to the 15 allowed.",
  "rule": "typescript:S3776",
  "effort": "17min"
 }
]

Commit f1c6bb6a5770 · analysis task · posted by the Build workflow; edited in place on every push.