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/codex/schemas/code-review-schema.json

@@ -0,0 +1,92 @@
+{
+  "type": "object",
+  "additionalProperties": false,
+  "properties": {
+    "summary": {
+      "type": "string",
+      "description": "Brief overall assessment of the code changes"
+    },
+    "verdict": {
+      "type": "string",
+      "enum": ["approve", "request-changes", "comment"],
+      "description": "Overall review verdict"
+    },
+    "confidence": {
+      "type": "number",
+      "minimum": 0,
+      "maximum": 1,
+      "description": "Confidence score for the review (0-1)"
+    },
+    "findings": {
+      "type": "array",
+      "items": {
+        "type": "object",
+        "additionalProperties": false,
+        "properties": {
+          "severity": {
+            "type": "string",
+            "enum": ["blocker", "should-fix", "suggestion"],
+            "description": "Finding severity: blocker (must fix), should-fix (important), suggestion (optional)"
+          },
+          "title": {
+            "type": "string",
+            "description": "Short title describing the issue"
+          },
+          "file": {
+            "type": "string",
+            "description": "File path where the issue was found"
+          },
+          "line_start": {
+            "type": "integer",
+            "description": "Starting line number"
+          },
+          "line_end": {
+            "type": "integer",
+            "description": "Ending line number"
+          },
+          "description": {
+            "type": "string",
+            "description": "Detailed explanation of the issue"
+          },
+          "suggestion": {
+            "type": "string",
+            "description": "Suggested fix or improvement"
+          }
+        },
+        "required": [
+          "severity",
+          "title",
+          "file",
+          "line_start",
+          "line_end",
+          "description",
+          "suggestion"
+        ]
+      }
+    },
+    "stats": {
+      "type": "object",
+      "additionalProperties": false,
+      "properties": {
+        "files_reviewed": {
+          "type": "integer",
+          "description": "Number of files reviewed"
+        },
+        "blockers": {
+          "type": "integer",
+          "description": "Count of blocker findings"
+        },
+        "should_fix": {
+          "type": "integer",
+          "description": "Count of should-fix findings"
+        },
+        "suggestions": {
+          "type": "integer",
+          "description": "Count of suggestion findings"
+        }
+      },
+      "required": ["files_reviewed", "blockers", "should_fix", "suggestions"]
+    }
+  },
+  "required": ["summary", "verdict", "confidence", "findings", "stats"]
+}