chore: remove internal docs from repo, update public documentation

Remove docs/superpowers/, .claude/ config, and PRD.md from version
control (kept locally via .gitignore). Update README, CHANGELOG,
VitePress docs, and .env.example to reflect recent features: Files
page, teams, admin settings, persistent storage, and various API
improvements.

apps/api/src/routes/tools/blur-faces.ts

@@ -60,10 +60,11 @@ export function registerBlurFaces(app: FastifyInstance) {
       await writeFile(inputPath, fileBuffer);
 
       // Process
-      const onProgress = clientJobId
+      const jobIdForProgress = clientJobId;
+      const onProgress = jobIdForProgress
         ? (percent: number, stage: string) => {
             updateSingleFileProgress({
-              jobId: clientJobId!,
+              jobId: jobIdForProgress,
               phase: "processing",
               stage,
               percent,

apps/api/src/routes/tools/erase-object.ts

@@ -71,10 +71,11 @@ export function registerEraseObject(app: FastifyInstance) {
       await writeFile(inputPath, imageBuffer);
 
       // Process
-      const onProgress = clientJobId
+      const jobIdForProgress = clientJobId;
+      const onProgress = jobIdForProgress
         ? (percent: number, stage: string) => {
             updateSingleFileProgress({
-              jobId: clientJobId!,
+              jobId: jobIdForProgress,
               phase: "processing",
               stage,
               percent,

apps/api/src/routes/tools/ocr.ts

@@ -73,10 +73,11 @@ export function registerOcr(app: FastifyInstance) {
       const jobId = randomUUID();
       const workspacePath = await createWorkspace(jobId);
 
-      const onProgress = clientJobId
+      const jobIdForProgress = clientJobId;
+      const onProgress = jobIdForProgress
         ? (percent: number, stage: string) => {
             updateSingleFileProgress({
-              jobId: clientJobId!,
+              jobId: jobIdForProgress,
               phase: "processing",
               stage,
               percent,

apps/api/src/routes/tools/remove-background.ts

@@ -62,10 +62,11 @@ export function registerRemoveBackground(app: FastifyInstance) {
         await writeFile(inputPath, fileBuffer);
 
         // Process
-        const onProgress = clientJobId
+        const jobIdForProgress = clientJobId;
+        const onProgress = jobIdForProgress
           ? (percent: number, stage: string) => {
               updateSingleFileProgress({
-                jobId: clientJobId!,
+                jobId: jobIdForProgress,
                 phase: "processing",
                 stage,
                 percent,

apps/api/src/routes/tools/strip-metadata.ts

@@ -75,9 +75,7 @@ function parseXmp(xmpBuffer: Buffer): Record<string, string> {
   const xml = xmpBuffer.toString("utf-8");
   const result: Record<string, string> = {};
 
-  const attrRegex = /(\w+:\w+)="([^"]+)"/g;
-  let match;
-  while ((match = attrRegex.exec(xml)) !== null) {
+  for (const match of xml.matchAll(/(\w+:\w+)="([^"]+)"/g)) {
     const key = match[1];
     if (key.startsWith("xmlns:") || key.startsWith("rdf:")) continue;
     result[key] = match[2];

apps/api/src/routes/tools/upscale.ts

@@ -62,10 +62,11 @@ export function registerUpscale(app: FastifyInstance) {
       await writeFile(inputPath, fileBuffer);
 
       // Process
-      const onProgress = clientJobId
+      const jobIdForProgress = clientJobId;
+      const onProgress = jobIdForProgress
         ? (percent: number, stage: string) => {
             updateSingleFileProgress({
-              jobId: clientJobId!,
+              jobId: jobIdForProgress,
               phase: "processing",
               stage,
               percent,