Add copilot customizations and harden Auth.ts validation

- Add architecture overview and inline-cast convention to copilot-instructions.md
- Consolidate repo memory files into copilot-instructions.md as single source of truth
- Add fix-all and server-change skills for automated CI and server-change checklists
- Add reviewer (read-only) and test-writer custom agents
- Fix unsafe type assertions in Auth.ts: validate JWT payload and scrypt options at runtime
- Add ESLint padding-line-between-statements rule to enforce blank lines after blocks
- Auto-fix 88 blank-line violations across codebase

Signed-off-by: Mike Lischke <mike@lischke-online.de>

Author: mike-lischke

.github/copilot-instructions.md

@@ -138,6 +138,7 @@ Always put a blank line after blocks (`if`/`for`/`while`/`switch`/`case`/anonymo
 - Use `undefined` instead of `null` everywhere.
 - Use `field?: Type` syntax instead of `field: Type | undefined` for optional fields.
 - Interface names always start with a capital `I` (e.g., `ISoundStyleMeta`, `IMeasureStep`).
+- Inline type casts (`as { ... }`) are acceptable for one-off use. If the same anonymous shape appears more than once, extract it to a named interface.
 - No section-divider comments (e.g. `// ---------- api ----------`). Let method ordering speak for itself.
 
 ### Security

eslint.config.mjs

@@ -200,6 +200,16 @@ export default tseslint.config(
                     prev: "*",
                     next: "return",
                 },
+                {
+                    blankLine: "always",
+                    prev: "block-like",
+                    next: "*",
+                },
+                {
+                    blankLine: "any",
+                    prev: "case",
+                    next: "case",
+                },
             ],
             "@stylistic/quotes": [
                 "error",

src/App.tsx

@@ -1382,7 +1382,9 @@ export class App extends UIComponent<{}, IAppState> {
             }
 
             default:
-        };
+        }
+
+        ;
 
         return true;
     };
@@ -1516,6 +1518,7 @@ export class App extends UIComponent<{}, IAppState> {
                         this.undoManager?.undo();
                     } // With ctrl, this doesn't even trigger on Mac. Seems harmless to include it anyway.
                 }
+
                 break;
             }
 

src/components/ui/Arrangement/ArrangementEditControls.tsx

@@ -217,6 +217,7 @@ export class ArrangementEditControls
 
             services.modeManager.deletePolyrhythmMode = false;
         }
+
         this.setState({ arePolyrhythms });
 
         return Promise.resolve(true);
@@ -261,6 +262,7 @@ export class ArrangementEditControls
             Overlay.toggleOverlay("delete_polyrhythms", "hide");
             services.modeManager.deletePolyrhythmMode = false;
         }
+
         this.setState({ arePolyrhythms });
 
         return Promise.resolve(true);

src/components/ui/Arrangement/UndoRedoControls.tsx

@@ -45,6 +45,7 @@ export class UndoRedoControls extends UIComponent<IUndoRedoProps, IUndoRedoState
                 canRedo: undoManager.canRedo
             });
         }
+
         this.prepareSubscriptions();
     }
 

src/components/ui/Bar/Grid/GridMeasureRow.tsx

@@ -70,6 +70,7 @@ export class GridMeasureRow extends UIComponent<IGridMeasureRowProperties> {
                     />,
                 );
             }
+
             cumulative += groupSize;
         }
 
@@ -120,6 +121,7 @@ export class GridMeasureRow extends UIComponent<IGridMeasureRowProperties> {
                 if (i < steps.length) {
                     items.push({ type: "step", step: steps[i] });
                 }
+
                 i++;
             }
         }

src/components/ui/Note/StaffNoteViewer.tsx

@@ -428,6 +428,7 @@ export class StaffNoteViewer extends UIComponent<IStaffNoteViewerProperties> {
                     target.delete(pending.negativeKey);
                 }
             }
+
             pendingSubdivisionBeams.length = 0;
 
             run = [];
@@ -597,6 +598,7 @@ export class StaffNoteViewer extends UIComponent<IStaffNoteViewerProperties> {
                     segments.push({ level, kind: "partial-left" });
                 }
             }
+
             if (segments.length > 0) {
                 const overwriteLevels = new Set(segments.map((segment) => {
                     return segment.level;
@@ -772,6 +774,7 @@ export class StaffNoteViewer extends UIComponent<IStaffNoteViewerProperties> {
             if (Number.isInteger(dottedSteps) && dottedSteps >= 2 && dottedSteps <= stepsPerBar) {
                 candidates.push({ steps: dottedSteps, alignmentSteps: base.steps, icon: base.icon, dotted: true });
             }
+
             if (Number.isInteger(base.steps) && base.steps >= 1 && base.steps <= stepsPerBar) {
                 candidates.push({ steps: base.steps, alignmentSteps: base.steps, icon: base.icon, dotted: false });
             }
@@ -854,6 +857,7 @@ export class StaffNoteViewer extends UIComponent<IStaffNoteViewerProperties> {
                     flushRun(currentRun);
                     currentRun = [];
                 }
+
                 basePos++;
             }
         }

src/components/ui/Print/PrintView.tsx

@@ -178,6 +178,7 @@ export class PrintView extends UIComponent<IPrintViewProps> {
             for (let j = 0; j < perLine && (i + j) <= totalBars; j++) {
                 block.push(i + j);
             }
+
             blocks.push(block);
         }
 

src/components/ui/Statusbar/Statusbar.tsx

@@ -218,6 +218,7 @@ export class Statusbar extends UIComponent<ICommonUIProperties, IStatusBarState>
                 iconClass += "codicon-modifier-spin ";
                 icon = icon.slice(0, -5);
             }
+
             iconClass += `codicon codicon-${icon}`;
 
             elements.push(<span key={`icon-${index}-${i}`} className={iconClass} />);

src/components/ui/composites/WaveformPlayer.tsx

@@ -106,7 +106,9 @@ export class WaveformPlayer extends UIComponent<IWaveformPlayerProps, IWaveformP
         let mediaElement: HTMLMediaElement | undefined;
         if (media) {
             mediaElement = document.getElementById(media) as HTMLMediaElement;
-        };
+        }
+
+        ;
 
         const ws = WaveSurfer.create({
             container: this.containerRef.current,