fix(editor): stabilize image generation, layer editing and controls (#6992)

* fix(editor): stabilize image workflows and editing controls

* docs(editor): add desktop and mobile visual validation evidence

* fix(editor): synchronize quick edit model events and register imagePreferences in test coordinator

* fix(settings): enforce authoritative global image-gen policy and non-admin preference persistence

- Enforce authoritative administrator global image_gen_enabled disable in get_user_setting, do_generate_image, and image_editing_provider_available, preventing non-admin user preference overrides while preserving user-disabled opt-outs and can_generate_images privilege checks across direct, gallery, and editor paths.
- Filter non-admin preference persistence in saveImagePreferences to user preference keys only (image_model, image_edit_model, image_quality), preventing global policy toggles from leaking into user preferences.
- Return accurate 200 OK Response from saveImagePreferences after fallback persistence succeeds so settings UI displays 'Saved' instead of false 403 error, while retaining visibility of real errors.
- Load per-user preferences via readImagePreferences in initImageSettings so non-admin selections persist and display correctly after page reload.
- Clear per-user model preferences on successful admin save (POST /api/auth/settings) via PUT /api/prefs/{key} with value: null to prevent stale per-user preferences from shadowing updated global settings.
- Support clearing keys in PUT /api/prefs/{key} when value is null.
- Add comprehensive Python regression tests for global-disabled/user-enabled, global-enabled/user-disabled, and authorized generation, plus Node and browser regression tests for non-admin persistence, toggle isolation, reload, and admin clearing.

* fix(settings): invalidate shared appConfig cache near auth settings write

* fix(test): isolate test_tool_policy unit suite from external model endpoint state

* fix(test): isolate web_fetch failure regression from contextual follow-up heuristics

* fix(test): isolate test_tool_policy from cross-test approval gate state

Ensure _patch_loop_basics disables TOOL_APPROVAL_GATE_ENABLED so routing tests in test_tool_policy run in the intended opt-out posture even when prior tests populate DATA_DIR with skills or untrusted context. Remove unnecessary forced_tools and contextual web mock workarounds.

* fix(settings): isolate non-admin image toggle and surface preference cleanup errors

- Restrict image generation availability toggle to admin users in imageModels.js, disabling the switch for non-admins and reverting unauthorized changes with an explicit message.
- Separate non-admin image model preference saves from global toggle updates.
- Track preference cleanup results on admin save in imagePreferences.js, propagating cleanup failures instead of ignoring them.
- Require valid preference keys on 403 fallback so toggle-only attempts reject cleanly.
- Add /api/prefs route mock to test_image_model_settings_sync_both_directions_and_survive_reopening.
- Add regression coverage for admin cleanup failures and non-admin toggle rejection.

* fix(settings): reconcile admin toggle on partial cleanup failure and report errors

- In imagePreferences.js, distinguish pre-persistence failures from post-save cleanup failures using err.globalSaved and err.phase.

- In imagePreferences.js, notify listeners of global policy updates on partial success before propagating cleanup failure.

- In imageModels.js, retain the persisted target state on admin toggle when global persistence succeeds but cleanup fails.

- In imageModels.js, reconcile admin toggle with authoritative server state via readImagePreferences() after ambiguous or partial failures.

- In imageModels.js, report partial success accurately without suppressing preference cleanup error messages.

- Add regression coverage in test_settings_save_response_ok_js.py for cleanup HTTP 500, cleanup network rejection, successful cleanup, and failed global POST.

---------

Co-authored-by: pewdiepie-archdaemon <pewdiepie-archdaemon@users.noreply.github.com>
Co-authored-by: Alexandre Teixeira <general@alexandreteixeira.dev>

static/js/editor/layer-styles.js

@@ -6,7 +6,7 @@ const size = () => number('size', 'Size', 8, 0, 100);
 const angle = () => number('angle', 'Angle', 120, -180, 180, 'deg');
 export const LAYER_STYLES = {
   'bevel-emboss': { label: 'Bevel & Emboss', controls: [size(), angle(), number('depth', 'Depth', 100, 0, 300, '%'), color('highlight', 'Highlight', '#ffffff'), color('color', 'Shadow', '#000000'), opacity()] },
-  'inner-shadow': { label: 'Inner Shadow', controls: [color('color', 'Color', '#000000'), opacity(), size(), angle(), number('distance', 'Distance', 6, 0, 100)] },
+  'inner-shadow': { label: 'Inner Shadow', controls: [color('color', 'Color', '#000000'), opacity(), size(), angle(), number('distance', 'Distance', 6, 0, 300)] },
   'inner-glow': { label: 'Inner Glow', controls: [color('color', 'Color', '#ffffff'), opacity(), size()] },
   satin: { label: 'Satin', controls: [color('color', 'Color', '#000000'), opacity(), size(), angle(), number('distance', 'Distance', 12, 0, 100)] },
   'gradient-overlay': { label: 'Gradient Overlay', controls: [color('color', 'Start', '#e06c75'), color('endColor', 'End', '#ffffff'), opacity(), angle(), number('scale', 'Scale', 100, 10, 300, '%')] },
@@ -32,6 +32,13 @@ function surface(width, height) {
 }
 
 export function renderDropShadow(source, params) {
+  if (params.inside) {
+    return renderLayerStyle(source, 'inner-shadow', {
+      color: params.color, opacity: params.opacity * 100, size: params.blur / 2,
+      distance: Math.hypot(params.x, params.y),
+      angle: Math.atan2(-params.y, params.x) * 180 / Math.PI,
+    });
+  }
   // Tint alpha first so RGB content cannot leak into the shadow. Draw only
   // this silhouette; compositing the source again thickens translucent edges.
   const silhouette = surface(source.width, source.height);