Bridge the fork up from upstream OpenCode v1.4.0 to v1.17.9 (no-common-ancestor tree-overlay merge, ~1850 files) and reconcile all fork customizations. Tracks the reconciliation: Effect-API migration, bootstrap/DB fixes, branding restoration, test suite green, and full validation (carry-forward, upstream-completeness, regression). PR follows.
Bridge the fork up from upstream OpenCode v1.4.0 to v1.17.9 (no-common-ancestor tree-overlay merge, ~1850 files) and reconcile all fork customizations. Tracks the reconciliation: Effect-API migration, bootstrap/DB fixes, branding restoration, test suite green, and full validation (carry-forward, upstream-completeness, regression). PR follows.