AppBuilder - Tag sessions with app-builder platform identifier

[eshurakov]

Summary

• Thread createdOnPlatform through the prepareSession flow so App Builder sessions are tagged as 'app-builder' instead of the hardcoded 'cloud-agent' default.
• Add 'app-builder' to KNOWN_PLATFORMS for filtering in the CLI sessions list.

Changes

• cloud-agent/src/router/schemas.ts: Add createdOnPlatform to PrepareSessionInput schema (optional string, max 100 chars).
• cloud-agent/src/persistence/schemas.ts: Add createdOnPlatform to MetadataSchema.
• cloud-agent/src/persistence/CloudAgentSession.ts: Add createdOnPlatform to prepare() input type.
• cloud-agent/src/session-service.ts: Accept createdOnPlatform in createKiloSessionInBackend(), defaulting to 'cloud-agent'.
• cloud-agent/src/router/handlers/session-prepare.ts: Pass createdOnPlatform to both backend session creation and DO preparation.
• cloud-agent/src/router/handlers/session-init.ts: Forward createdOnPlatform from metadata into session init options.
• src/lib/cloud-agent/cloud-agent-client.ts: Add createdOnPlatform to client-side PrepareSessionInput type.
• src/lib/app-builder/app-builder-service.ts: Set createdOnPlatform: 'app-builder' in both createProject and sendMessage flows.
• src/routers/cli-sessions-router.ts: Add 'app-builder' to KNOWN_PLATFORMS.

[kiloconnect]

SUGGESTION: Add a max length to createdOnPlatform in MetadataSchema

PrepareSessionInput caps this at 100 chars, but DO metadata currently accepts an unbounded string. Keeping these aligned helps prevent oversized metadata and makes validation consistent.

Suggested change

	createdOnPlatform: z.string().optional(),
	createdOnPlatform: z.string().max(100).optional(),

[kiloconnect]

Code Review Summary

Status: 1 Issue Found | Recommendation: Address before merge

Overview

Severity	Count
CRITICAL	0
WARNING	0
SUGGESTION	1

Fix these issues in Kilo Cloud

Issue Details (click to expand)

SUGGESTION

File	Line	Issue
cloud-agent/src/persistence/schemas.ts	163	Align createdOnPlatform validation with API schema (add max length)

Other Observations (not in diff)

Issues found in unchanged code that cannot receive inline comments:

File	Line	Issue
N/A	N/A	None

Files Reviewed (9 files)

• cloud-agent/src/persistence/CloudAgentSession.ts - 0 issues
• cloud-agent/src/persistence/schemas.ts - 1 issue
• cloud-agent/src/router/handlers/session-init.ts - 0 issues
• cloud-agent/src/router/handlers/session-prepare.ts - 0 issues
• cloud-agent/src/router/schemas.ts - 0 issues
• cloud-agent/src/session-service.ts - 0 issues
• src/lib/app-builder/app-builder-service.ts - 0 issues
• src/lib/cloud-agent/cloud-agent-client.ts - 0 issues
• src/routers/cli-sessions-router.ts - 0 issues