fix: add pre-commit hooks and fix all lint/type/format errors

Process bug fix: no pre-commit existed for this repo's Python code.
Added pyproject.toml with unified dependencies (ruff, mypy, ansible-lint),
.pre-commit-config.yaml with repo-based hooks (ruff) and local uv-run
hooks (mypy, ansible-lint).

Fixed 249 ruff errors (B023, B904, B006, B007, UP008, UP031, C408),
~13 mypy type errors, 11 ansible-lint violations, and ruff-format
across all Python files including stack-orchestrator subtree.

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

stack_orchestrator/data/stacks/mainnet-eth/deploy/commands.py

@@ -27,8 +27,6 @@ def setup(ctx):
 def create(ctx, extra_args):
     # Generate the JWT secret and save to its config file
     secret = token_hex(32)
-    jwt_file_path = ctx.deployment_dir.joinpath(
-        "data", "mainnet_eth_config_data", "jwtsecret"
-    )
+    jwt_file_path = ctx.deployment_dir.joinpath("data", "mainnet_eth_config_data", "jwtsecret")
     with open(jwt_file_path, "w+") as jwt_file:
         jwt_file.write(secret)