fix: add sourceType to apiCreateCompose and apiCreateApplication

[elijahdev0]

Problem

apiCreateCompose and apiCreateApplication use createSchema.pick({...}) but omit sourceType from the pick list. Because the DB column defaults to "github":

sourceType: sourceTypeCompose("sourceType").notNull().default("github")

Every compose/application created via the API gets sourceType: "github" regardless of intention. Users must manually update it after creation via the compose/application update endpoint.

Fix

Add sourceType: true to both .pick() schemas:

• packages/server/src/db/schema/compose.ts — apiCreateCompose
• packages/server/src/db/schema/application.ts — apiCreateApplication

Why it's safe

sourceType is already defined as .optional() in both createSchemas, so callers that don't send it will still get the DB default ("github"). This is purely additive — no breaking change.

Template-based creation (createComposeByTemplate) and the /compose.update endpoint are unaffected (they already handle sourceType correctly).

Impact

• ✅ POST /compose.create now accepts an optional sourceType field
• ✅ POST /application.create now accepts an optional sourceType field
• ✅ OpenAPI spec auto-fixes on regeneration (generated via trpc-openapi from Zod schemas)
• ✅ Backward compatible — existing callers continue to work unchanged