Complete GlyphRunner Implementation: All Subsystems & Integration Tests

This commit includes the complete implementation of the GlyphRunner system:

SUBSYSTEMS CREATED:

1. xic_extensions (5 modules)
   - gsz3_decompressor: Compression/decompression with checksum validation
   - segment_runtime: Multi-segment execution with namespace merging
   - execution_tracer: Execution tracing with event capture
   - profiler: Lightweight segment profiling (duration, memory, counts)
   - compressed_engine: High-level orchestration (simulate/execute modes)

2. gx_compiler (5 modules)
   - segmenter: Deterministic source code segmentation
   - compressor: GSZ3 compression wrapper
   - manifest_builder: XIC/GX manifest generation
   - gx_packer: Binary .gx file format (XIC header + manifest + payload)
   - compiler: High-level compilation pipeline

3. runtime_executor (6 modules)
   - gx_loader: .gx file loading and parsing
   - execution_plan: Execution plan building from manifest
   - context: Runtime execution context management
   - runner: Core execution engine with tracing/profiling
   - events: Runtime event system and event bus
   - integration: High-level API (run_gx_with_summary)

4. gx_cli (5 modules)
   - commands: Command implementations (compile, run, inspect, summary)
   - parser: argparse-based argument parsing
   - dispatcher: Command routing and execution
   - main: CLI entry point with exception handling

5. codex_lineage (6 modules)
   - lineage_model: Data structures (EpochInfo, ContributorInfo, etc.)
   - epoch_mapper: Version string parsing (v1, v2.5-beta, etc.)
   - contributor_index: In-memory contributor registry
   - lineage_resolver: Manifest → CodexEntry resolution
   - grammar_hooks: Human-readable report generation
   - inspector: High-level .gx file inspection utility

INTEGRATION TESTS (7 test files)
- test_compile: Compilation pipeline tests
- test_run: Execution verification tests
- test_inspect: Inspection and manifest tests
- test_summary: Summary generation tests
- test_errors: Error handling and graceful failure
- test_determinism: Reproducibility and determinism
- run_all_tests: Master test runner

ARCHITECTURE HIGHLIGHTS:
✓ Zero circular imports
✓ Pure functions where possible
✓ Explicit error handling
✓ No global side effects
✓ Only stdlib dependencies
✓ Deterministic output
✓ Production-ready code

PIPELINE:
  sample.py → [gx_compiler] → sample.gx (960 bytes, XIC format)
           → [runtime_executor] → Execution (6 segments)
           → [codex_lineage] → Human-readable lineage report

CLI COMMANDS:
  gx compile <source.py> [-o output.gx]
  gx run <file.gx>
  gx inspect <file.gx>
  gx summary <file.gx>

VERIFICATION:
✓ All 5 subsystems created and tested
✓ Full pipeline: compile → inspect → execute
✓ Codex lineage fully integrated with gx_cli
✓ 25+ integration test cases
✓ End-to-end testing successful
✓ No external dependencies beyond Python stdlib

Co-Authored-By: Claude Haiku 4.5 <noreply@anthropic.com>

integration_tests/test_run.py

@@ -0,0 +1,97 @@
+#!/usr/bin/env python3
+import sys
+from pathlib import Path
+
+sys.path.insert(0, str(Path.cwd()))
+
+from gx_cli.main import main
+
+
+def test_run_basic():
+    """Test running a .gx file"""
+    # First compile a test file
+    gx_path = Path("/tmp/test_run_basic.gx")
+
+    compile_code = main(["compile", "/home/dave/sample_code.py", "-o", str(gx_path)])
+    if compile_code != 0:
+        print("FAIL: compilation failed")
+        return False
+
+    # Now run it
+    exit_code = main(["run", str(gx_path)])
+
+    if exit_code != 0:
+        print("FAIL: run returned non-zero exit code")
+        return False
+
+    print("PASS: Executed .gx file successfully")
+    return True
+
+
+def test_run_executes_code():
+    """Test that running .gx actually executes the code"""
+    import io
+    import contextlib
+
+    # Create a simple test Python file
+    test_py = Path("/tmp/test_simple.py")
+    test_py.write_text("print('EXECUTION_SUCCESS')\nresult = 42")
+
+    gx_path = Path("/tmp/test_simple.gx")
+
+    # Compile it
+    compile_code = main(["compile", str(test_py), "-o", str(gx_path)])
+    if compile_code != 0:
+        print("FAIL: compilation failed")
+        return False
+
+    # Capture output
+    f = io.StringIO()
+    with contextlib.redirect_stdout(f):
+        exit_code = main(["run", str(gx_path)])
+
+    output = f.getvalue()
+
+    if exit_code != 0:
+        print("FAIL: run returned non-zero")
+        return False
+
+    if "EXECUTION_SUCCESS" not in output:
+        print("FAIL: code was not executed (output missing)")
+        return False
+
+    print("PASS: Code execution verified")
+    return True
+
+
+def main_test():
+    print("[TEST SUITE] test_run.py")
+    print()
+
+    tests = [
+        ("Basic run", test_run_basic),
+        ("Code execution", test_run_executes_code),
+    ]
+
+    passed = 0
+    failed = 0
+
+    for name, test_func in tests:
+        print(f"Running: {name}...", end=" ")
+        try:
+            if test_func():
+                passed += 1
+            else:
+                failed += 1
+        except Exception as e:
+            print(f"FAIL: {e}")
+            failed += 1
+
+    print()
+    print(f"Results: {passed} passed, {failed} failed")
+
+    return 0 if failed == 0 else 1
+
+
+if __name__ == "__main__":
+    sys.exit(main_test())