feat(studio): add flat-inspector tokens and STUDIO_FLAT_INSPECTOR_ENABLED flag

.fallowrc.jsonc

@@ -251,6 +251,12 @@
       "file": "packages/core/src/figma/manifest.ts",
       "exports": ["mediaDir", "typeDirPath", "isFigmaManifestRecord"],
     },
+    // STUDIO_FLAT_INSPECTOR_ENABLED: exported for use by downstream studio
+    // inspector redesign tasks; consumed by components in later PRs.
+    {
+      "file": "packages/studio/src/components/editor/manualEditingAvailability.ts",
+      "exports": ["STUDIO_FLAT_INSPECTOR_ENABLED"],
+    },
   ],
   "ignoreDependencies": [
     // Runtime/dynamic deps not visible to static analysis: tsup `external`,

packages/studio/src/components/editor/manualEditingAvailability.test.ts

@@ -105,4 +105,14 @@ describe("manual editing availability", () => {
     expect(resolveStudioBooleanEnvFlag({ EMPTY: "" }, ["EMPTY"], true)).toBe(true);
     expect(resolveStudioBooleanEnvFlag({ UNKNOWN: "maybe" }, ["UNKNOWN"], false)).toBe(false);
   });
+
+  it("defaults the flat inspector flag to false and honors an explicit override", async () => {
+    const off = await loadAvailabilityWithEnv({});
+    expect(off.STUDIO_FLAT_INSPECTOR_ENABLED).toBe(false);
+
+    const on = await loadAvailabilityWithEnv({
+      VITE_STUDIO_FLAT_INSPECTOR_ENABLED: "true",
+    });
+    expect(on.STUDIO_FLAT_INSPECTOR_ENABLED).toBe(true);
+  });
 });

packages/studio/src/components/editor/manualEditingAvailability.ts

@@ -97,4 +97,13 @@ export const STUDIO_SDK_RESOLVER_SHADOW_ENABLED = resolveStudioBooleanEnvFlag(
   true,
 );
 
+// Studio inspector redesign ("Ledger, flat" — design_handoff_studio_inspector):
+// flat identity header/footer/groups behind a flag for incremental review.
+// Default false; enable via VITE_STUDIO_FLAT_INSPECTOR_ENABLED=true.
+export const STUDIO_FLAT_INSPECTOR_ENABLED = resolveStudioBooleanEnvFlag(
+  env,
+  ["VITE_STUDIO_ENABLE_FLAT_INSPECTOR", "VITE_STUDIO_FLAT_INSPECTOR_ENABLED"],
+  false,
+);
+
 export const STUDIO_MANUAL_EDITING_DISABLED_TITLE = "Manual editing is temporarily disabled";

packages/studio/src/styles/tailwind-preset.shared.js

@@ -17,6 +17,8 @@ const studioPreset = {
           hover: "#27272A",
           border: "#1E1E1E",
           "border-input": "#27272A",
+          hairline: "#1A1A1C",
+          "text-0": "#FAFAFA",
           "text-1": "#E4E4E7",
           "text-2": "#A1A1AA",
           "text-3": "#71717A",
@@ -24,6 +26,8 @@ const studioPreset = {
           "text-5": "#3F3F46",
           accent: "#3CE6AC",
           danger: "#EF4444",
+          media: "#00E3FF",
+          container: "#F5A623",
         },
       },
     },