Add SPDX license headers across repository and introduce license metadata and header checker

examples/basic_cycle.py

@@ -1,3 +1,6 @@
+# SPDX-FileCopyrightText: 2026 Сацук Артём Венедиктович (Satsuk Artem)
+# SPDX-License-Identifier: Apache-2.0
+
 from __future__ import annotations
 
 import asyncio

pyproject.toml

@@ -7,10 +7,14 @@ name = "spiral-autonomy-kernel"
 version = "1.0.0"
 description = "Persistent, policy-bounded self-evolution runtime for LLM-based systems"
 readme = "README.md"
+license = { file = "LICENSE" }
 requires-python = ">=3.10"
 dependencies = [
     "httpx>=0.27,<1",
 ]
+classifiers = [
+    "License :: OSI Approved :: Apache Software License",
+]
 
 [project.optional-dependencies]
 dev = [

scripts/build_proof_pack.py

@@ -1,3 +1,6 @@
+# SPDX-FileCopyrightText: 2026 Сацук Артём Венедиктович (Satsuk Artem)
+# SPDX-License-Identifier: Apache-2.0
+
 from __future__ import annotations
 
 import json
@@ -13,16 +16,30 @@
 RUNTIME_DIR = ROOT / '.sif'
 
 
-def _run(command: list[str]) -> subprocess.CompletedProcess[str]:
+def _run(command: list[str], retries: int = 0) -> subprocess.CompletedProcess[str]:
     env = dict(os.environ)
     env['PYTHONPATH'] = 'src'
-    return subprocess.run(
-        command,
-        cwd=ROOT,
-        text=True,
-        capture_output=True,
-        check=True,
-        env=env,
+    attempts = retries + 1
+    last_result: subprocess.CompletedProcess[str] | None = None
+    for _ in range(attempts):
+        result = subprocess.run(
+            command,
+            cwd=ROOT,
+            text=True,
+            capture_output=True,
+            check=False,
+            env=env,
+        )
+        if result.returncode == 0:
+            return result
+        last_result = result
+
+    assert last_result is not None
+    command_str = " ".join(command)
+    raise RuntimeError(
+        f"Command failed after {attempts} attempt(s): {command_str}\n"
+        f"stdout:\n{last_result.stdout}\n"
+        f"stderr:\n{last_result.stderr}"
     )
 
 
@@ -33,7 +50,7 @@ def main() -> None:
 
     try:
         compile_result = _run([sys.executable, '-m', 'compileall', '-q', 'src'])
-        test_result = _run([sys.executable, '-m', 'pytest', '-q'])
+        test_result = _run([sys.executable, '-m', 'pytest', '-q'], retries=1)
         smoke_result = _run([
             sys.executable,
             '-m',

scripts/check.sh

@@ -1,6 +1,10 @@
 #!/usr/bin/env bash
+# SPDX-FileCopyrightText: 2026 Сацук Артём Венедиктович (Satsuk Artem)
+# SPDX-License-Identifier: Apache-2.0
+
 set -euo pipefail
 
+python scripts/check_license_headers.py
 pytest -q
 python -m compileall -q src
 PYTHONPATH=src python -m sif.cli --cycles 1 --json >/dev/null

scripts/check_license_headers.py

@@ -0,0 +1,38 @@
+# SPDX-FileCopyrightText: 2026 Сацук Артём Венедиктович (Satsuk Artem)
+# SPDX-License-Identifier: Apache-2.0
+
+from __future__ import annotations
+
+from pathlib import Path
+
+ROOTS = ("src", "tests", "scripts", "examples")
+SUFFIXES = {".py", ".sh"}
+COPYRIGHT_TAG = "SPDX-FileCopyrightText:"
+LICENSE_TAG = "SPDX-License-Identifier: Apache-2.0"
+
+
+def main() -> int:
+    missing: list[str] = []
+
+    for root in ROOTS:
+        for path in sorted(Path(root).rglob("*")):
+            if path.suffix not in SUFFIXES:
+                continue
+            header = path.read_text().splitlines()[:8]
+            has_copyright = any(COPYRIGHT_TAG in line for line in header)
+            has_license = any(LICENSE_TAG in line for line in header)
+            if not (has_copyright and has_license):
+                missing.append(str(path))
+
+    if missing:
+        print("Missing SPDX header tags in:")
+        for path in missing:
+            print(f" - {path}")
+        return 1
+
+    print("All checked code files include SPDX copyright and license tags.")
+    return 0
+
+
+if __name__ == "__main__":
+    raise SystemExit(main())

scripts/run_demo.sh

@@ -1,4 +1,7 @@
 #!/usr/bin/env bash
+# SPDX-FileCopyrightText: 2026 Сацук Артём Венедиктович (Satsuk Artem)
+# SPDX-License-Identifier: Apache-2.0
+
 set -euo pipefail
 
 PYTHONPATH=src python -m sif.cli --cycles 1 --json

src/__init__.py

@@ -1,3 +1,6 @@
+# SPDX-FileCopyrightText: 2026 Сацук Артём Венедиктович (Satsuk Artem)
+# SPDX-License-Identifier: Apache-2.0
+
 """Spiral Autonomy Kernel source tree."""
 
 __all__: list[str] = []

src/aiosqlite.py

@@ -1,3 +1,6 @@
+# SPDX-FileCopyrightText: 2026 Сацук Артём Венедиктович (Satsuk Artem)
+# SPDX-License-Identifier: Apache-2.0
+
 from __future__ import annotations
 
 """Lightweight local subset of the aiosqlite API used by this repository.
@@ -22,11 +25,17 @@
 
 
 class Cursor:
-    def __init__(self, connection: 'Connection', sql: str, parameters: Iterable[Any] | None = None) -> None:
+    def __init__(
+        self,
+        connection: 'Connection',
+        sql: str,
+        parameters: Iterable[Any] | None = None,
+        prefetched_rows: list[Any] | None = None,
+    ) -> None:
         self._connection = connection
         self._sql = sql
         self._parameters = tuple(parameters or ())
-        self._rows: list[Any] | None = None
+        self._rows: list[Any] | None = prefetched_rows
         self._index = 0
 
     async def _ensure_rows(self) -> list[Any]:
@@ -100,7 +109,14 @@ async def __aexit__(self, exc_type, exc, tb) -> None:
 
     async def execute(self, sql: str, parameters: Iterable[Any] | None = None) -> Cursor:
         await self._ensure_open()
-        return Cursor(self, sql, parameters)
+        async with self._lock:
+            def _run() -> list[Any]:
+                assert self._conn is not None
+                sqlite_cursor = self._conn.execute(sql, tuple(parameters or ()))
+                return list(sqlite_cursor.fetchall())
+
+            rows = await asyncio.to_thread(_run)
+        return Cursor(self, sql, parameters, prefetched_rows=rows)
 
     async def executemany(self, sql: str, seq_of_parameters: Iterable[Iterable[Any]]) -> None:
         await self._ensure_open()

src/cli.py

@@ -1,3 +1,6 @@
+# SPDX-FileCopyrightText: 2026 Сацук Артём Венедиктович (Satsuk Artem)
+# SPDX-License-Identifier: Apache-2.0
+
 from sif.cli import main
 
 __all__ = ['main']

src/components/__init__.py

@@ -1 +1,4 @@
+# SPDX-FileCopyrightText: 2026 Сацук Артём Венедиктович (Satsuk Artem)
+# SPDX-License-Identifier: Apache-2.0
+
 """Component definitions for Spiral Autonomy Kernel."""

src/components/adaptation.py

@@ -1,3 +1,6 @@
+# SPDX-FileCopyrightText: 2026 Сацук Артём Венедиктович (Satsuk Artem)
+# SPDX-License-Identifier: Apache-2.0
+
 from dataclasses import dataclass
 from typing import Any, Dict, List
 

src/components/autonomy_scope.py

@@ -1,3 +1,6 @@
+# SPDX-FileCopyrightText: 2026 Сацук Артём Венедиктович (Satsuk Artem)
+# SPDX-License-Identifier: Apache-2.0
+
 from dataclasses import dataclass
 import json
 from typing import Any, Dict, List

src/components/base.py

@@ -1,3 +1,6 @@
+# SPDX-FileCopyrightText: 2026 Сацук Артём Венедиктович (Satsuk Artem)
+# SPDX-License-Identifier: Apache-2.0
+
 from dataclasses import dataclass, field
 from typing import Any, Dict, List
 

src/components/code_mutation.py

@@ -1,3 +1,6 @@
+# SPDX-FileCopyrightText: 2026 Сацук Артём Венедиктович (Satsuk Artem)
+# SPDX-License-Identifier: Apache-2.0
+
 from dataclasses import dataclass
 from pathlib import Path
 from typing import Any, Dict, List

src/components/constraint_explorer.py

@@ -1,3 +1,6 @@
+# SPDX-FileCopyrightText: 2026 Сацук Артём Венедиктович (Satsuk Artem)
+# SPDX-License-Identifier: Apache-2.0
+
 from dataclasses import dataclass
 import json
 from typing import Any, Dict, List

src/components/generated/__init__.py

@@ -1 +1,4 @@
+# SPDX-FileCopyrightText: 2026 Сацук Артём Венедиктович (Satsuk Artem)
+# SPDX-License-Identifier: Apache-2.0
+
 """Generated components package."""

src/components/generated/auto_component.py

@@ -1,3 +1,6 @@
+# SPDX-FileCopyrightText: 2026 Сацук Артём Венедиктович (Satsuk Artem)
+# SPDX-License-Identifier: Apache-2.0
+
 from dataclasses import dataclass
 from typing import Any, Dict, List
 

src/components/governance.py

@@ -1,3 +1,6 @@
+# SPDX-FileCopyrightText: 2026 Сацук Артём Венедиктович (Satsuk Artem)
+# SPDX-License-Identifier: Apache-2.0
+
 from dataclasses import dataclass
 from typing import Any, Dict, List
 

src/components/improvement_protocol.py

@@ -1,3 +1,6 @@
+# SPDX-FileCopyrightText: 2026 Сацук Артём Венедиктович (Satsuk Artem)
+# SPDX-License-Identifier: Apache-2.0
+
 from dataclasses import dataclass
 from typing import Any, Dict, List
 

src/components/mission_alignment.py

@@ -1,3 +1,6 @@
+# SPDX-FileCopyrightText: 2026 Сацук Артём Венедиктович (Satsuk Artem)
+# SPDX-License-Identifier: Apache-2.0
+
 from dataclasses import dataclass
 import json
 from typing import Any, Dict, List

src/components/registry.py

@@ -1,3 +1,6 @@
+# SPDX-FileCopyrightText: 2026 Сацук Артём Венедиктович (Satsuk Artem)
+# SPDX-License-Identifier: Apache-2.0
+
 import logging
 from dataclasses import dataclass, field
 from importlib import import_module

src/core/__init__.py

@@ -1 +1,4 @@
+# SPDX-FileCopyrightText: 2026 Сацук Артём Венедиктович (Satsuk Artem)
+# SPDX-License-Identifier: Apache-2.0
+
 """Core modules for Spiral Autonomy Kernel."""

src/core/adaptive_rules.py

@@ -1,3 +1,6 @@
+# SPDX-FileCopyrightText: 2026 Сацук Артём Венедиктович (Satsuk Artem)
+# SPDX-License-Identifier: Apache-2.0
+
 from dataclasses import dataclass, field
 import json
 from typing import Any, Dict, List, Tuple

src/core/async_cpu.py

@@ -1,3 +1,6 @@
+# SPDX-FileCopyrightText: 2026 Сацук Артём Венедиктович (Satsuk Artem)
+# SPDX-License-Identifier: Apache-2.0
+
 from __future__ import annotations
 
 import asyncio

src/core/async_fs.py

@@ -1,3 +1,6 @@
+# SPDX-FileCopyrightText: 2026 Сацук Артём Венедиктович (Satsuk Artem)
+# SPDX-License-Identifier: Apache-2.0
+
 from __future__ import annotations
 
 import asyncio

src/core/autonomous_evolution.py

@@ -1,3 +1,6 @@
+# SPDX-FileCopyrightText: 2026 Сацук Артём Венедиктович (Satsuk Artem)
+# SPDX-License-Identifier: Apache-2.0
+
 from dataclasses import dataclass
 import json
 from typing import Any, Dict, List

src/core/autonomy.py

@@ -1,3 +1,6 @@
+# SPDX-FileCopyrightText: 2026 Сацук Артём Венедиктович (Satsuk Artem)
+# SPDX-License-Identifier: Apache-2.0
+
 from __future__ import annotations
 
 from typing import Any, Dict, List

src/core/autonomy_charter.py

@@ -1,3 +1,6 @@
+# SPDX-FileCopyrightText: 2026 Сацук Артём Венедиктович (Satsuk Artem)
+# SPDX-License-Identifier: Apache-2.0
+
 from __future__ import annotations
 
 from typing import Any, Dict, List

src/core/bandit.py

@@ -1,3 +1,6 @@
+# SPDX-FileCopyrightText: 2026 Сацук Артём Венедиктович (Satsuk Artem)
+# SPDX-License-Identifier: Apache-2.0
+
 from __future__ import annotations
 from sif.core.time_utils import utc_now_iso
 

src/core/benchmarks.py

@@ -1,3 +1,6 @@
+# SPDX-FileCopyrightText: 2026 Сацук Артём Венедиктович (Satsuk Artem)
+# SPDX-License-Identifier: Apache-2.0
+
 from __future__ import annotations
 
 import time

src/core/cache_store.py

@@ -1,3 +1,6 @@
+# SPDX-FileCopyrightText: 2026 Сацук Артём Венедиктович (Satsuk Artem)
+# SPDX-License-Identifier: Apache-2.0
+
 from __future__ import annotations
 
 import asyncio
@@ -241,7 +244,8 @@ async def _close_db(self) -> None:
     async def _load_cache_from_db(self) -> Dict[str, Any]:
         db = self._require_db()
         payload: Dict[str, Any] = {}
-        async with db.execute("SELECT cache_key, value_json FROM cache_entries") as cursor:
+        cursor = await db.execute("SELECT cache_key, value_json FROM cache_entries")
+        async with cursor:
             async for row in cursor:
                 try:
                     payload[row["cache_key"]] = json.loads(row["value_json"])

src/core/candidates.py

@@ -1,3 +1,6 @@
+# SPDX-FileCopyrightText: 2026 Сацук Артём Венедиктович (Satsuk Artem)
+# SPDX-License-Identifier: Apache-2.0
+
 from __future__ import annotations
 
 from dataclasses import dataclass, field

src/core/code_intelligence.py

@@ -1,3 +1,6 @@
+# SPDX-FileCopyrightText: 2026 Сацук Артём Венедиктович (Satsuk Artem)
+# SPDX-License-Identifier: Apache-2.0
+
 from dataclasses import dataclass
 import ast
 import asyncio

src/core/evaluator.py

@@ -1,3 +1,6 @@
+# SPDX-FileCopyrightText: 2026 Сацук Артём Венедиктович (Satsuk Artem)
+# SPDX-License-Identifier: Apache-2.0
+
 from __future__ import annotations
 
 import asyncio

src/core/events.py

@@ -1,3 +1,6 @@
+# SPDX-FileCopyrightText: 2026 Сацук Артём Венедиктович (Satsuk Artem)
+# SPDX-License-Identifier: Apache-2.0
+
 from __future__ import annotations
 
 import asyncio

src/core/evolution.py

@@ -1,3 +1,6 @@
+# SPDX-FileCopyrightText: 2026 Сацук Артём Венедиктович (Satsuk Artem)
+# SPDX-License-Identifier: Apache-2.0
+
 from dataclasses import dataclass
 import json
 from pathlib import Path

src/core/experiment_manager.py

@@ -1,3 +1,6 @@
+# SPDX-FileCopyrightText: 2026 Сацук Артём Венедиктович (Satsuk Artem)
+# SPDX-License-Identifier: Apache-2.0
+
 from __future__ import annotations
 
 import asyncio

src/core/impact_ledger.py

@@ -1,3 +1,6 @@
+# SPDX-FileCopyrightText: 2026 Сацук Артём Венедиктович (Satsuk Artem)
+# SPDX-License-Identifier: Apache-2.0
+
 from __future__ import annotations
 
 from dataclasses import dataclass