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/quality/scripts/install.ps1

@@ -0,0 +1,59 @@
+# Quality Rails Installation Script (Windows)
+param(
+    [Parameter(Mandatory=$true)]
+    [string]$Template,
+
+    [Parameter(Mandatory=$false)]
+    [string]$TargetDir = "."
+)
+
+$ErrorActionPreference = "Stop"
+
+$ScriptDir = Split-Path -Parent $MyInvocation.MyCommand.Path
+$RepoRoot = Split-Path -Parent $ScriptDir
+$TemplateDir = Join-Path $RepoRoot "templates\$Template"
+
+if (-not (Test-Path $TemplateDir)) {
+    Write-Error "Template '$Template' not found at $TemplateDir"
+    Write-Host "Available templates: typescript-node, typescript-nextjs, python, monorepo"
+    exit 1
+}
+
+Write-Host "Installing Quality Rails: $Template"
+Write-Host "Target directory: $TargetDir"
+Write-Host ""
+
+# Copy template files
+Write-Host "Copying template files..."
+if (Test-Path "$TemplateDir\.husky") {
+    Copy-Item -Path "$TemplateDir\.husky" -Destination $TargetDir -Recurse -Force
+}
+Copy-Item -Path "$TemplateDir\.lintstagedrc.js" -Destination $TargetDir -Force -ErrorAction SilentlyContinue
+Copy-Item -Path "$TemplateDir\.eslintrc.strict.js" -Destination "$TargetDir\.eslintrc.js" -Force -ErrorAction SilentlyContinue
+Copy-Item -Path "$TemplateDir\tsconfig.strict.json" -Destination "$TargetDir\tsconfig.json" -Force -ErrorAction SilentlyContinue
+Copy-Item -Path "$TemplateDir\.woodpecker.yml" -Destination $TargetDir -Force -ErrorAction SilentlyContinue
+
+# Copy shared gitleaks config from templates root
+$SharedTemplates = Split-Path -Parent $TemplateDir
+Copy-Item -Path "$SharedTemplates\.gitleaks.toml" -Destination $TargetDir -Force -ErrorAction SilentlyContinue
+
+Write-Host "✓ Files copied"
+
+if (Test-Path "$TargetDir\package.json") {
+    Write-Host ""
+    Write-Host "⚠ package.json exists. Please manually merge dependencies from:"
+    Write-Host "  $TemplateDir\package.json.snippet"
+} else {
+    Write-Host "⚠ No package.json found. Create one and add dependencies from:"
+    Write-Host "  $TemplateDir\package.json.snippet"
+}
+
+Write-Host ""
+Write-Host "✓ Quality Rails installed successfully!"
+Write-Host ""
+Write-Host "Next steps:"
+Write-Host "1. Install dependencies: npm install"
+Write-Host "2. Initialize husky: npx husky install"
+Write-Host "3. Install gitleaks: winget install gitleaks"
+Write-Host "4. Run verification: ..\quality-rails\scripts\verify.ps1"
+Write-Host "5. (Optional) Scan full history: gitleaks git --redact --verbose"