Fix CSSX colour rules: reset cssx-resolve JIT to force CEK

cssx-resolve has a complex cond with nested and conditions that the
JIT compiler miscompiles — the colour branch is skipped even when
all conditions are true. Reset to jit_failed_sentinel after loading
so it runs on CEK (which evaluates correctly).

Added vm-reset-fn kernel command for targeted JIT bypass.

All CSSX colour tokens now generate rules: text-violet-699,
text-stone-500, bg-stone-50, etc.

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

shared/sx/ocaml_bridge.py

@@ -439,6 +439,16 @@ class OcamlBridge:
                         skipped += 1
                         _logger.warning("OCaml load skipped %s: %s",
                                         filepath, e)
+                # JIT workaround: reset functions with known compilation bugs.
+                # cssx-resolve has a complex cond that the JIT miscompiles
+                # (colour branch skipped even when conditions are true).
+                # Resetting forces CEK interpretation.
+                try:
+                    await self._send('(vm-reset-fn "cssx-resolve")')
+                    await self._read_until_ok(ctx=None)
+                except OcamlBridgeError:
+                    pass
+
                 # SSR overrides: effect is a no-op on the server (prevents
                 # reactive loops during island SSR — effects are DOM side-effects)
                 try: