game-views: per-view gear menus (SCROLL filter / ATLAS sources / disabled stubs); reelhouse POST placeholder DRY

Each reelhouse view now has its own gear. The single #id_room_menu swaps panes by the active view (room-views.js owns this now — removed from room-scroll.js, which keeps only the title reel):

- hex → default NVM/DEL/BYE; SCROLL → the Frame/Redact log filter; ATLAS → a new source-checkbox pane (.room-menu-atlas / #id_atlas_source_form).
- YARN/POST/PULSE → no menu yet: the gear goes .gear-disabled (opacity 0.6) and an active click is swallowed by a capture-phase listener that flashes a --priRd fa-ban (the burger inactive-flash cadence) instead of opening anything.

ATLAS gear: a checkbox per other reelhouse view (Scroll/Post wired + checked; Yarn/Pulse disabled — struck label, an ✗ in a custom box matching the enabled ✓; starting-majuscule labels, capslock stays reel-only). OK persists to localStorage + re-runs buildAtlasFeed, which now gates each source on atlasSources() (scroll→provenance, post→post).

Also: the reelhouse POST composer drops its bespoke 'Speak at the table' placeholder for the canonical 'Enter a post line' (same as the billboard New Post applet's _form.html + post.html).

Verified: 11 carousel FTs (incl. the new per-view-gear FT) + 310 epic ITs (incl. the atlas-menu IT; room_gate shares _room_gear, unaffected) + the scroll-gear regression FTs + Jasmine, all green.

[[project-room-game-views-carousel]] [[feedback-applet-menu-needs-extend]]
Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>

src/static_src/scss/_room.scss

@@ -350,6 +350,68 @@ html.sea-open #id_aperture_fill {
     display: contents;
 }
 
+// ── Per-view gear states (room-views.js) ──────────────────────────────────
+// On YARN/POST/PULSE the reelhouse gear has no menu yet → dimmed; an active
+// click flashes a --priRd fa-ban (same cadence/colour as the burger inactive
+// sub-btns) instead of opening anything.
+.gear-btn.gear-disabled { opacity: 0.6; }
+.gear-btn.gear-flash-ban {
+    color: rgba(var(--priRd), 1);
+    box-shadow:
+        0 0 0.5rem 0.1rem rgba(var(--priRd), 0.75),
+        0 0 1.2rem 0.3rem rgba(var(--priRd), 0.35);
+    // Swap the gear glyph for fa-ban (FA solid \f05e) for the duration of the
+    // flash — the "nothing here" signal, mirroring the burger fan.
+    .fa-gear::before { content: "\f05e"; }
+}
+
+// ── ATLAS gear: source checkboxes ─────────────────────────────────────────
+// Custom boxes so the disabled (no-model-yet) sources can show an ✗ that reads
+// like the enabled ✓ — same box, different mark — with a struck, dimmed label.
+// Labels stay lowercase (capslock is reel-only).
+.room-menu-atlas {
+    .atlas-source-form { display: flex; flex-direction: column; gap: 0.3rem; }
+
+    .atlas-source {
+        display: flex;
+        align-items: center;
+        gap: 0.4rem;
+        text-transform: none;
+        cursor: pointer;
+
+        input[type="checkbox"] {
+            appearance: none;
+            -webkit-appearance: none;
+            margin: 0;
+            width: 1em;
+            height: 1em;
+            flex-shrink: 0;
+            border: 0.1rem solid rgba(var(--terUser), 0.7);
+            border-radius: 0.15rem;
+            display: inline-grid;
+            place-content: center;
+            cursor: pointer;
+            line-height: 1;
+
+            &::before { content: ""; font-size: 0.8em; }
+            &:checked::before { content: "✓"; color: rgba(var(--terUser), 1); }
+        }
+
+        // Disabled source (yarn/pulse — no backing model): dim + struck NAME
+        // (not the box, so the ✗ stays legible) + an ✗ in the box.
+        &:has(input:disabled) {
+            opacity: 0.55;
+            cursor: default;
+            input[type="checkbox"] {
+                cursor: default;
+                border-color: rgba(var(--secUser), 0.7);
+                &::before { content: "✗"; color: rgba(var(--secUser), 1); }
+            }
+            .atlas-source-name { text-decoration: line-through; }
+        }
+    }
+}
+
 .gate-backdrop {
     position: fixed;
     inset: 0;