[schemas] Document workflow-status prerequisite for enhanced-thoughts

[drewyd]

Summary

The enhanced-thoughts schema has a hidden dependency on the workflow-status schema that isn't documented in the README. This PR adds a clearly placed Prerequisites callout.

Symptom (fresh install)

Running schemas/enhanced-thoughts/schema.sql on a project that hasn't applied workflow-status first fails with:

ERROR:  column "status" of relation "thoughts" does not exist

The failure happens inside the CREATE OR REPLACE FUNCTION public.upsert_thought block.

Why

schemas/enhanced-thoughts/schema.sql writes to two columns on the thoughts table that enhanced-thoughts does not itself create:

• INSERT at lines 347-370 writes to status and status_updated_at
• ON CONFLICT UPDATE at lines 379-383 updates those same columns

Those columns are created by schemas/workflow-status/ (see its README and migration).

Fix

Single doc-only change to schemas/enhanced-thoughts/README.md: adds an > [!IMPORTANT] callout at the top of the existing Prerequisites section, plus a new bullet linking to ../workflow-status/. No SQL, code, or metadata.json changes.

Note: I considered adding a requires.schemas array to metadata.json to make this machine-checkable, but .github/metadata.schema.json sets additionalProperties: false on requires and only allows open_brain / services / tools — adding a schemas dependency field would need a schema spec change first. Happy to follow up with a separate PR if you'd like that.

File changes

• schemas/enhanced-thoughts/README.md (+4 lines, -0)

Test plan

• On a fresh Open Brain Supabase project: apply workflow-status first, then enhanced-thoughts — both succeed
• On a fresh project: apply enhanced-thoughts directly — reproduces the column "status" does not exist error referenced in the README callout
• Rendered README: confirm the IMPORTANT callout displays at the top of Prerequisites and the relative link to ../workflow-status/ resolves on github.com

Caught while installing five schemas during a Brain Architecture build on 2026-05-26.

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Co-Authored-By: Claude Opus 4.7 (1M context) noreply@anthropic.com

[github-actions]

Hey @drewyd — welcome to Open Brain Source! 👋

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