fix(github): update source_metadata state field instead of signals.status

[neethika12]

Summary

Fixes the "close issue from dashboard" bug (Sentinent-AI/Sentinent#35).

Problem

UpdateGitHubIssueState was writing 'open' / 'closed' into the signals.status column, which is reserved for the read/unread/archived workflow state. This meant the toggle call appeared to succeed (200 from GitHub API) but the local signal record was never updated correctly, so the card state didn't change on refresh.

Fix

Instead of updating signals.status, the handler now updates the "state" key inside the source_metadata JSON using SQLite's replace() function, scoped to the matching signal by user_id, workspace_id, source_type = 'github', and the issue number pattern in the metadata.

UPDATE signals
SET source_metadata = replace(source_metadata, '"state":"open"', '"state":"closed"'),
    updated_at      = CURRENT_TIMESTAMP
WHERE user_id      = ?
  AND workspace_id = ?
  AND source_type  = 'github'
  AND source_metadata LIKE '%"number":123%'

Files changed

• services/github.go