move pi-mono into companion-cloud as apps/companion-os

- Copy all pi-mono source into apps/companion-os/
- Update Dockerfile to COPY pre-built binary instead of downloading from GitHub Releases
- Update deploy-staging.yml to build pi from source (bun compile) before Docker build
- Add apps/companion-os/** to path triggers
- No more cross-repo dispatch needed

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

packages/coding-agent/scripts/migrate-sessions.sh

@@ -0,0 +1,93 @@
+#!/usr/bin/env bash
+#
+# Migrate sessions from ~/.pi/agent/*.jsonl to proper session directories.
+# This fixes sessions created by the bug in v0.30.0 where sessions were
+# saved to ~/.pi/agent/ instead of ~/.pi/agent/sessions/<encoded-cwd>/.
+#
+# Usage: ./migrate-sessions.sh [--dry-run]
+#
+
+set -e
+
+AGENT_DIR="${PI_AGENT_DIR:-$HOME/.pi/agent}"
+DRY_RUN=false
+
+if [[ "$1" == "--dry-run" ]]; then
+    DRY_RUN=true
+    echo "Dry run mode - no files will be moved"
+    echo
+fi
+
+# Find all .jsonl files directly in agent dir (not in subdirectories)
+shopt -s nullglob
+files=("$AGENT_DIR"/*.jsonl)
+shopt -u nullglob
+
+if [[ ${#files[@]} -eq 0 ]]; then
+    echo "No session files found in $AGENT_DIR"
+    exit 0
+fi
+
+echo "Found ${#files[@]} session file(s) to migrate"
+echo
+
+migrated=0
+failed=0
+
+for file in "${files[@]}"; do
+    filename=$(basename "$file")
+    
+    # Read first line and extract cwd using jq
+    if ! first_line=$(head -1 "$file" 2>/dev/null); then
+        echo "SKIP: $filename - cannot read file"
+        ((failed++))
+        continue
+    fi
+    
+    # Parse JSON and extract cwd
+    if ! cwd=$(echo "$first_line" | jq -r '.cwd // empty' 2>/dev/null); then
+        echo "SKIP: $filename - invalid JSON"
+        ((failed++))
+        continue
+    fi
+    
+    if [[ -z "$cwd" ]]; then
+        echo "SKIP: $filename - no cwd in session header"
+        ((failed++))
+        continue
+    fi
+    
+    # Encode cwd: remove leading slash, replace slashes with dashes, wrap with --
+    encoded=$(echo "$cwd" | sed 's|^/||' | sed 's|[/:\\]|-|g')
+    encoded="--${encoded}--"
+    
+    target_dir="$AGENT_DIR/sessions/$encoded"
+    target_file="$target_dir/$filename"
+    
+    if [[ -e "$target_file" ]]; then
+        echo "SKIP: $filename - target already exists"
+        ((failed++))
+        continue
+    fi
+    
+    echo "MIGRATE: $filename"
+    echo "    cwd: $cwd"
+    echo "    to:  $target_dir/"
+    
+    if [[ "$DRY_RUN" == false ]]; then
+        mkdir -p "$target_dir"
+        mv "$file" "$target_file"
+    fi
+    
+    ((migrated++))
+    echo
+done
+
+echo "---"
+echo "Migrated: $migrated"
+echo "Skipped:  $failed"
+
+if [[ "$DRY_RUN" == true && $migrated -gt 0 ]]; then
+    echo
+    echo "Run without --dry-run to perform the migration"
+fi