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fix(FN-5584): restore planning fallback when primary provider API key is missing

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The top-level promptWithFallback bypassed the session-attached rich fallback
path that runs isRetryableModelSelectionError + swapPromptSession, so errors
like "No API key for provider: anthropic" propagated without trying the
configured planning fallback. Restore the dispatch with a WeakSet re-entry
guard that preserves the FN-4900 recursion fix for plugin-runtime sessions.

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
This commit is contained in:
gsxdsm
2026-05-25 14:36:26 -07:00
parent e4099f2ff5
commit 06a107dcba
3 changed files with 41 additions and 3 deletions
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"@runfusion/fusion": patch
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Fix triage/executor not swapping to the configured planning fallback model when the primary provider's API key is missing (or returns 401/403/rate-limit). The top-level `promptWithFallback` now delegates to the rich session-attached path (which runs `isRetryableModelSelectionError` and `swapPromptSession`), with a WeakSet re-entry guard preserving the FN-4900 recursion fix.