fix(vite): alias @nitrots/nitro-renderer umbrella to source index.ts

Without an explicit alias for the umbrella package
@nitrots/nitro-renderer, vite's resolver follows the node_modules
symlink (@nitrots/nitro-renderer -> Nitro_Render_V3) and the
\`"main": "./index"\` field, which can land on a stale built
\`dist/index.js\` when one exists in the renderer working tree.

When that happens the bundle ships pre-snapshot-pattern stubs of
SessionDataManager / IgnoredUsersManager / etc. — and the new
useSessionInfo / useUserDataSnapshot code calling getUserDataSnapshot()
explodes at runtime with the Firefox error

  TypeError: (intermediate value)() is undefined

(which is Firefox's way of reporting a chain like
\`GetSessionDataManager().getUserDataSnapshot()\` where the second
method is undefined). The reported call site is ToolbarView line 46
because that's the first consumer of useSessionInfo that mounts.

Two fixes together:

1. This commit: explicit alias \`@nitrots/nitro-renderer\` ->
   \`<renderer>/index.ts\`. Subsequent transitive imports
   (export * from '@nitrots/api', '@nitrots/events', ...) still go
   through the existing per-package aliases, so all renderer code is
   guaranteed-source even when a stale dist exists.

2. Rebuild the renderer's dist (yarn build in Nitro_Render_V3) so that
   any other consumer that bypasses vite's alias resolution (e.g. an
   ad-hoc Node script) also sees the current state. Done separately.

No source code change to any consumer. The client production build
\`yarn build\` now produces a bundle containing getUserDataSnapshot,
getIgnoredUsersSnapshot, SESSION_DATA_UPDATED, IGNORED_USERS_UPDATED
and the other new symbols — verified via grep on dist/assets/*.js.

vite.config.mjs

@@ -104,6 +104,16 @@ export default defineConfig({
         alias: {
             '@': resolve(__dirname, 'src'),
             '~': resolve(__dirname, 'node_modules'),
+            // Force the umbrella to the source index.ts. Without this,
+            // node-module resolution (via the symlink at
+            // node_modules/@nitrots/nitro-renderer -> ../Nitro_Render_V3)
+            // can land on the stale `dist/index.js` when one exists in
+            // the renderer working tree — leaving the bundle with
+            // pre-snapshot-pattern stubs and producing runtime errors
+            // like "TypeError: (intermediate value)() is undefined"
+            // when newer code calls getUserDataSnapshot() / .subscribe()
+            // / NitroEventType.SESSION_DATA_UPDATED etc.
+            '@nitrots/nitro-renderer': resolve(rendererRoot, 'index.ts'),
             '@nitrots/api': resolve(rendererRoot, 'packages/api/src/index.ts'),
             '@nitrots/assets': resolve(rendererRoot, 'packages/assets/src/index.ts'),
             '@nitrots/avatar': resolve(rendererRoot, 'packages/avatar/src/index.ts'),