fix: 500 on create session - missing body

[gregberns]

There's a 500 when POST /session is called. The server requires a body to be included - but currently there's an empty payload.

POST | /session | Create session | body: { parentID?, title? }, returns Session
-- | -- | -- | --

POST	/session	Create session	body: { parentID?, title? }, returns [Session](https://github.com/sst/opencode/blob/dev/packages/sdk/js/src/gen/types.gen.ts)

Summary by CodeRabbit

• New Features
  • Enhanced session creation with support for optional parent ID and title parameters.

[coderabbitai]

Walkthrough

The createSession API method in the service layer has been enhanced to accept optional configuration parameters (parentID and title), which are now serialized and sent in the POST request body to /session.

Changes

Cohort / File(s)	Change Summary
Session API Enhancement src/services/api.ts	Updated createSession method signature to accept optional options parameter containing parentID and title fields; request body now includes JSON-serialized options or empty object.

Estimated code review effort

🎯 2 (Simple) | ⏱️ ~8 minutes

• Verify that the JSON serialization handles both cases correctly (options provided and undefined)
• Confirm the API endpoint /session supports the new request body parameters
• Check that existing callers of createSession remain compatible with the optional parameter

Poem

🐰 A session now blooms with options so bright,
Parent IDs and titles, held snug and tight,
From parameters optional, our API takes flight,
No breaking of code—just features done right!

Pre-merge checks and finishing touches

✅ Passed checks (3 passed)

Check name	Status	Explanation
Description Check	✅ Passed	Check skipped - CodeRabbit’s high-level summary is enabled.
Title check	✅ Passed	The PR title clearly and concisely identifies the main issue being fixed: adding a missing request body to the create session endpoint to resolve a 500 error.
Docstring Coverage	✅ Passed	No functions found in the changed files to evaluate docstring coverage. Skipping docstring coverage check.

✨ Finishing touches

• 📝 Generate docstrings

🧪 Generate unit tests (beta)

• Create PR with unit tests
• Post copyable unit tests in a comment

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[coderabbitai]

Actionable comments posted: 0

🧹 Nitpick comments (1)

src/services/api.ts (1)

63-68: The original review comment is accurate and well-founded. Verification confirms:

1. Backward compatibility: The only call site is src/stores/sessionStore.ts:32, which calls createSession() with no arguments. The optional parameter ensures full compatibility.

2. Ternary simplification: The suggestion is valid. Both options ? JSON.stringify(options) : JSON.stringify({}) and JSON.stringify(options || {}) produce identical results, so the simplification is correct.

The review comment appropriately flags an optional refactoring opportunity while approving the core fix.

📜 Review details

Configuration used: CodeRabbit UI

Review profile: CHILL

Plan: Pro

📥 Commits

Reviewing files that changed from the base of the PR and between 0ab3c85 and 4782945.

📒 Files selected for processing (1)

• src/services/api.ts (1 hunks)

🧰 Additional context used

🧬 Code graph analysis (1)

src/services/api.ts (1)

src/services/types.ts (1)

• Session (2-10)