fix(audit): expand home paths across phase0 CLI scripts

Apply HOME-based ~ expansion to summarize/drift/prune audit scripts for input/output path flags to match capture behavior and avoid literal ~/ path bugs. Architecture/protocol diagrams reviewed; no updates needed for this path-resolution change.

scripts/prune-phase0-baseline-artifacts.ts

@@ -30,6 +30,17 @@ function isoDateTagNow(): string {
   return new Date().toISOString().slice(0, 10);
 }
 
+function expandHomePath(pathValue: string): string {
+  if (!pathValue.startsWith('~')) {
+    return pathValue;
+  }
+  const home = process.env.HOME;
+  if (!home) {
+    return pathValue;
+  }
+  return resolve(home, pathValue.slice(1));
+}
+
 function parseOptionalInteger(raw: string | undefined, flag: string): number | undefined {
   if (!raw) {
     return undefined;
@@ -111,7 +122,7 @@ async function main(): Promise<void> {
     return;
   }
 
-  const artifactsDir = resolve(values['artifacts-dir'] ?? 'docs/plans/artifacts');
+  const artifactsDir = resolve(expandHomePath(values['artifacts-dir'] ?? 'docs/plans/artifacts'));
   const keepPerFamily = parseOptionalInteger(values['keep-per-family'], '--keep-per-family') ?? 8;
   const apply = Boolean(values.apply);
   const format = values.format ?? 'text';
@@ -124,12 +135,12 @@ async function main(): Promise<void> {
 
   const defaultBaseName = resolve(artifactsDir, `phase0_baseline_live_prune_${reportTag}`);
   const summaryJsonOut = values['summary-json-out']
-    ? resolve(values['summary-json-out'])
+    ? resolve(expandHomePath(values['summary-json-out']))
     : writeDefaultArtifacts
       ? `${defaultBaseName}.json`
       : undefined;
   const summaryMdOut = values['summary-md-out']
-    ? resolve(values['summary-md-out'])
+    ? resolve(expandHomePath(values['summary-md-out']))
     : writeDefaultArtifacts
       ? `${defaultBaseName}.md`
       : undefined;