feat(web): add isLanguageModelConfigured to service ping

[brendan-kellam]

Fixes SOU-1278

Adds isLanguageModelConfigured to the service ping payload, set to true when at least one language model is configured. Updates the mirrored lighthouse request schema (sourcebot-dev/lighthouse#16) and the Service Ping docs.

🤖 Generated with Claude Code

Summary by CodeRabbit

• New Features

  • Service Ping now includes an isLanguageModelConfigured field to indicate whether at least one language model has been configured in your system.

• Documentation

  • Updated Service Ping documentation with the new field and example payload.
  • Added guidelines ensuring Service Ping documentation remains synchronized with implementation updates.

[coderabbitai]

Walkthrough

This PR adds an isLanguageModelConfigured boolean field to the Service Ping request payload. The schema is extended in types.ts, the implementation imports getConfiguredLanguageModels, computes whether any models are configured during syncWithLighthouse, and includes that flag in the ping request. User-facing docs and internal guidelines are updated accordingly.

Changes

Service Ping Language Model Configuration

Layer / File(s)	Summary
Service Ping schema extension packages/web/src/features/billing/types.ts	servicePingRequestSchema gains a required isLanguageModelConfigured: boolean field, which updates the inferred ServicePingRequest type.
Language model configuration telemetry packages/web/src/features/billing/servicePing.ts	Implementation imports getConfiguredLanguageModels, awaits the result to compute a boolean flag during syncWithLighthouse, and includes isLanguageModelConfigured in the ServicePingRequest payload sent to client.ping.
Documentation and sync guidelines CHANGELOG.md, docs/docs/misc/service-ping.mdx, packages/web/src/features/billing/CLAUDE.md	Changelog entry records the new field; Service Ping user docs are updated with the field in the reference table and example JSON; internal CLAUDE.md guidelines mandate syncing service-ping.mdx whenever servicePingRequestSchema changes.

Estimated code review effort

🎯 2 (Simple) | ⏱️ ~10 minutes

Suggested reviewers

• msukkari

🚥 Pre-merge checks | ✅ 5

✅ Passed checks (5 passed)

Check name	Status	Explanation
Description Check	✅ Passed	Check skipped - CodeRabbit’s high-level summary is enabled.
Title check	✅ Passed	The title accurately summarizes the main change: adding a new boolean field to the service ping payload.
Docstring Coverage	✅ Passed	No functions found in the changed files to evaluate docstring coverage. Skipping docstring coverage check.
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.

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✨ 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 brendan/sou-1278-add-islanguagemodelconfigured-to-service-ping

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[coderabbitai]

Actionable comments posted: 1

🤖 Prompt for all review comments with AI agents

Verify each finding against current code. Fix only still-valid issues, skip the
rest with a brief reason, keep changes minimal, and validate.

Inline comments:
In `@packages/web/src/features/billing/CLAUDE.md`:
- Around line 24-26: The fenced code block in CLAUDE.md that contains the path
"docs/docs/misc/service-ping.mdx" is missing a language hint and triggers
markdownlint MD040; update that fenced block by adding a language identifier
(e.g., "text") after the opening backticks so the block reads like ```text to
silence MD040 and keep the displayed content unchanged.

🪄 Autofix (Beta)

Fix all unresolved CodeRabbit comments on this PR:

• Push a commit to this branch (recommended)
• Create a new PR with the fixes

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ℹ️ Review info

⚙️ Run configuration

Configuration used: Organization UI

Review profile: CHILL

Plan: Pro

Run ID: 7af0de30-228b-4589-a151-44b906cb44e1

📥 Commits

Reviewing files that changed from the base of the PR and between 279bbb8 and 81e7fe5.

📒 Files selected for processing (5)

• CHANGELOG.md
• docs/docs/misc/service-ping.mdx
• packages/web/src/features/billing/CLAUDE.md
• packages/web/src/features/billing/servicePing.ts
• packages/web/src/features/billing/types.ts