security: add timeouts to HTTP requests and fix temp directory usage

- Add 30-second timeouts to all HTTP requests in enterprise_cli.py (5 instances)
- Add 30-second timeouts to all HTTP requests in miner_management.py (4 instances)
- Replace hardcoded /tmp with tempfile.gettempdir() in extended_features.py
- Fix requires-python constraint from ^3.13 to >=3.13 in aitbc-core
- Add missing dependencies: pynacl to aitbc-crypto, httpx to aitbc-sdk
- Add poetry packages configuration to aitbc-core pyproject.toml
- Add type

packages/py/aitbc-core/pyproject.toml

@@ -6,7 +6,7 @@ authors = [
     {name = "AITBC Team", email = "team@aitbc.dev"}
 ]
 readme = "README.md"
-requires-python = "^3.13"
+requires-python = ">=3.13"
 dependencies = [
     "cryptography>=41.0.0",
     "sqlmodel>=0.0.14",
@@ -19,3 +19,8 @@ dependencies = [
 [build-system]
 requires = ["poetry-core"]
 build-backend = "poetry.core.masonry.api"
+
+[tool.poetry]
+packages = [
+    { include = "aitbc_core", from = "src" }
+]

packages/py/aitbc-crypto/pyproject.toml

@@ -8,7 +8,8 @@ authors = [
 readme = "README.md"
 requires-python = ">=3.13"
 dependencies = [
-    "cryptography>=41.0.0"
+    "cryptography>=41.0.0",
+    "pynacl>=1.5.0"
 ]
 
 [build-system]

packages/py/aitbc-sdk/pyproject.toml

@@ -10,7 +10,8 @@ requires-python = ">=3.13"
 dependencies = [
     "cryptography>=41.0.0",
     "requests>=2.31.0",
-    "pydantic>=2.5.0"
+    "pydantic>=2.5.0",
+    "httpx>=0.25.0"
 ]
 
 [build-system]

packages/solidity/aitbc-token/package.json

@@ -2,6 +2,7 @@
   "name": "@aitbc/aitbc-token",
   "version": "0.2.3",
   "private": true,
+  "type": "module",
   "description": "AITBC Solidity contracts for attested receipt-based minting",
   "scripts": {
     "build": "hardhat compile",