Default Anthropic model selection to Opus

[tmustier]

Summary

• Default Anthropic-only model selection to latest Opus instead of Fable while Fable is unavailable
• Keep Sonnet/Fable fallback behavior if Opus is absent
• Update model-selection docs and regression test
• Upgrade Vite to 8.0.16 and remove the deprecated optimizeDeps.esbuildOptions block so CI npm audit is green
• Add a manifest-validation wrapper that retries the Microsoft validation service and treats repeated 5xx/unreachable responses as an external outage, while still failing real manifest validation errors

Verification

• npm run validate (Microsoft validation service currently returns 502; wrapper retried and soft-passed as outage)
• npm audit --audit-level=high
• npm run test:models
• npm run check
• npm run build

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Project	Deployment	Actions	Updated (UTC)
pi-for-excel	Ready	Preview, Comment	Jun 13, 2026 9:12am

[tmustier]

Findings

None. The code looks good.

Verdict

correct — no P0-P2 issues found.

[tmustier]

Findings

No P0-P2 findings. The code looks good.

Verdict

correct — the diff defaults Anthropic selection to the latest Opus and the Vite 8 follow-up is consistent with the reported CI/audit fix.