feat: integrate framework files into monorepo under packages/mosaic/framework/

Moves all Mosaic framework runtime files from the separate bootstrap repo
into the monorepo as canonical source. The @mosaic/mosaic npm package now
ships the complete framework — bin scripts, runtime configs, tools, and
templates — enabling standalone installation via npm install.

Structure:
  packages/mosaic/framework/
  ├── bin/          28 CLI scripts (mosaic, mosaic-doctor, mosaic-sync-skills, etc.)
  ├── runtime/      Runtime adapters (claude, codex, opencode, pi, mcp)
  ├── tools/        Shell tooling (git, prdy, orchestrator, quality, etc.)
  ├── templates/    Agent and repo templates
  ├── defaults/     Default identity files (AGENTS.md, STANDARDS.md, SOUL.md, etc.)
  ├── install.sh    Legacy bash installer
  └── remote-install.sh  One-liner remote installer

Key files with Pi support and recent fixes:
- bin/mosaic: launch_pi() with skills-local loop
- bin/mosaic-doctor: --fix auto-wiring for all 4 harnesses
- bin/mosaic-sync-skills: Pi as 4th link target, symlink-aware find
- bin/mosaic-link-runtime-assets: Pi settings.json patching
- bin/mosaic-migrate-local-skills: Pi skill roots, symlink find
- runtime/pi/RUNTIME.md + mosaic-extension.ts

Package ships 251 framework files in the npm tarball (278KB compressed).

packages/mosaic/framework/tools/bootstrap/init-repo-labels.sh

@@ -0,0 +1,123 @@
+#!/bin/bash
+# init-repo-labels.sh - Create standard labels and initial milestone for a repository
+# Usage: init-repo-labels.sh [--skip-milestone]
+#
+# Works with both Gitea (tea) and GitHub (gh).
+
+set -e
+
+SCRIPT_DIR="$(cd "$(dirname "${BASH_SOURCE[0]}")" && pwd)"
+GIT_SCRIPT_DIR="$HOME/.config/mosaic/tools/git"
+source "$GIT_SCRIPT_DIR/detect-platform.sh"
+
+SKIP_MILESTONE=false
+
+while [[ $# -gt 0 ]]; do
+    case $1 in
+        --skip-milestone)
+            SKIP_MILESTONE=true
+            shift
+            ;;
+        -h|--help)
+            echo "Usage: $(basename "$0") [--skip-milestone]"
+            echo ""
+            echo "Create standard labels and initial milestone for the current repository."
+            echo ""
+            echo "Options:"
+            echo "  --skip-milestone   Skip creating the 0.0.1 pre-MVP milestone"
+            echo "  -h, --help         Show this help"
+            exit 0
+            ;;
+        *)
+            echo "Unknown option: $1" >&2
+            exit 1
+            ;;
+    esac
+done
+
+PLATFORM=$(detect_platform)
+OWNER=$(get_repo_owner)
+REPO=$(get_repo_name)
+
+echo "Platform: $PLATFORM"
+echo "Repository: $OWNER/$REPO"
+echo ""
+
+# Standard labels with colors
+# Format: "name|color|description"
+LABELS=(
+    "epic|3E4B9E|Large feature spanning multiple issues"
+    "feature|0E8A16|New functionality"
+    "bug|D73A4A|Defect fix"
+    "task|0075CA|General work item"
+    "documentation|0075CA|Documentation updates"
+    "security|B60205|Security-related"
+    "breaking|D93F0B|Breaking change"
+)
+
+create_label_github() {
+    local name="$1" color="$2" description="$3"
+
+    # Check if label already exists
+    if gh label list --repo "$OWNER/$REPO" --json name -q ".[].name" 2>/dev/null | grep -qx "$name"; then
+        echo "  [skip] '$name' already exists"
+        return 0
+    fi
+
+    gh label create "$name" \
+        --repo "$OWNER/$REPO" \
+        --color "$color" \
+        --description "$description" 2>/dev/null && \
+        echo "  [created] '$name'" || \
+        echo "  [error] Failed to create '$name'"
+}
+
+create_label_gitea() {
+    local name="$1" color="$2" description="$3"
+
+    # Check if label already exists
+    if tea labels list 2>/dev/null | grep -q "$name"; then
+        echo "  [skip] '$name' already exists"
+        return 0
+    fi
+
+    tea labels create --name "$name" --color "#$color" --description "$description" 2>/dev/null && \
+        echo "  [created] '$name'" || \
+        echo "  [error] Failed to create '$name'"
+}
+
+echo "Creating labels..."
+
+for label_def in "${LABELS[@]}"; do
+    IFS='|' read -r name color description <<< "$label_def"
+
+    case "$PLATFORM" in
+        github)
+            create_label_github "$name" "$color" "$description"
+            ;;
+        gitea)
+            create_label_gitea "$name" "$color" "$description"
+            ;;
+        *)
+            echo "Error: Unsupported platform '$PLATFORM'" >&2
+            exit 1
+            ;;
+    esac
+done
+
+echo ""
+
+# Create initial pre-MVP milestone
+if [[ "$SKIP_MILESTONE" != true ]]; then
+    echo "Creating initial pre-MVP milestone..."
+
+    "$GIT_SCRIPT_DIR/milestone-create.sh" -t "0.0.1" -d "Pre-MVP - Foundation Sprint" 2>/dev/null && \
+        echo "  [created] Milestone '0.0.1 - Pre-MVP'" || \
+        echo "  [skip] Milestone may already exist or creation failed"
+
+    echo "  [note] Reserve 0.1.0 for MVP release milestone"
+
+    echo ""
+fi
+
+echo "Label initialization complete."