Add conversation_link pass-through field to Holmes chat params

[ezra-robusta]

What

Adds an optional conversation_link field to HolmesChatParams (src/robusta/core/model/base_params.py) and HolmesChatRequest (src/robusta/core/reporting/holmes.py). It carries the URL of the surface a chat originated from (Slack thread permalink, Teams message link, platform chat/workflow-run URL); Holmes renders it into its system prompt so any PR/MR/issue it creates links back to the originating conversation.

Pure pass-through — no behavior change in robusta itself. Old Holmes versions ignore the field; new Holmes validates it before rendering (shape + origin allowlist) — see the holmesgpt PR.

Companion PRs in holmesgpt (prompt rendering + validation), relay (link construction per chat surface), and robusta-frontend (platform chat URLs). Relay PR: robusta-dev/relay#748.

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https://claude.ai/code/session_01F5Lu9XsDRPWEANCEg9hYDS

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ℹ️ Recent review info

⚙️ Run configuration

Configuration used: Organization UI

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📥 Commits

Reviewing files that changed from the base of the PR and between 7c76938 and 849341f.

📒 Files selected for processing (2)

• src/robusta/core/model/base_params.py
• src/robusta/core/reporting/holmes.py

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Walkthrough

The Holmes chat parameter and request models now accept an optional conversation_link field. The field stores the originating Slack, Teams, chat, or workflow URL.

Changes

Holmes conversation link support

Layer / File(s)	Summary
Conversation link contract src/robusta/core/model/base_params.py, src/robusta/core/reporting/holmes.py	HolmesChatParams and HolmesChatRequest now define optional conversation_link fields with None defaults and documentation for originating conversation URLs.

Estimated code review effort: 1 (Trivial) | ~2 minutes

Merge Risk: ⚪ Minimal · up to 84934

This localized change adds an optional conversation link without altering existing behavior, and no actionable merge-blocking risk remains beyond normal checks and review.

🚥 Pre-merge checks | ✅ 5

✅ Passed checks (5 passed)

Check name	Status	Explanation
Docstring Coverage	✅ Passed	No functions found in the changed files to evaluate docstring coverage. Skipping docstring coverage check. Docstring coverage is scoped to functions touched by this diff. Analyzed 0 functions across 2…
Linked Issues check	✅ Passed	Check skipped because no linked issues were found for this pull request.
Out of Scope Changes check	✅ Passed	Check skipped because no linked issues were found for this pull request.
Title check	✅ Passed	The title clearly identifies the main change: adding a conversation_link pass-through field to Holmes chat parameters.
Description check	✅ Passed	The description directly explains the added conversation_link fields, their purpose, and the unchanged Robusta behavior.

Full details: Docstring Coverage

Explanation

No functions found in the changed files to evaluate docstring coverage. Skipping docstring coverage check. Docstring coverage is scoped to functions touched by this diff. Analyzed 0 functions across 2 files.

✨ Finishing Touches

📝 Generate docstrings

• Create stacked PR
• Commit on current branch

🧪 Generate unit tests (beta)

• Create PR with unit tests
• Commit unit tests in branch claude/holmes-pr-conversation-links-ktnbu3

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