[ejsmith]

Summary

• route Exie through OpenRouter's unpinned DeepSeek V4 Flash latest-family alias
• detect raw DSML tool-call markup before it reaches the browser and retry the provider once
• return a clear error if the retry is also malformed
• extend unit and provider-backed quality coverage for DSML leakage

Why

OpenRouter could return DeepSeek's internal DSML representation as ordinary assistant text, exposing broken tool-call markup in the conversation. The previous undated model slug also remained on the older Flash release instead of following the latest family revision.

Behavior

• no public API contract changes
• clean provider responses retain their original text-delta boundaries, but each provider round is validated before those deltas are emitted
• malformed responses consume at most one additional provider request
• existing usage, token, tool, time, and provider-price limits remain in place

Verification

dotnet test --project tests/Exceptionless.Tests/Exceptionless.Tests.csproj --no-restore --no-progress -- --filter-namespace Exceptionless.Tests.Assistant

• 76 passed
• 1 skipped: opt-in billable provider evaluation

[github-actions]

Package	Line Rate	Branch Rate	Complexity	Health
Exceptionless.Insulation	37%	35%	286	❌
Exceptionless.Core	75%	67%	10184	✔
Exceptionless.Web	85%	69%	7903	✔
Exceptionless.AppHost	38%	41%	147	❌
Summary	78% (25157 / 32154)	67% (11810 / 17554)	18520	✔

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