refactor: unified google vein, prefixed module loading, cfg separation

- Unified google vein with OAuth + Sheets API
- Prefixed vein module loading (vein_google) to avoid pip package shadowing
- Preload pip packages before vein loading
- Added common/auth framework
- Rebranded sbwrapper from Pawprint to Soleprint
- Removed cfg/ from history (now separate repo)
- Keep cfg/standalone/ as sample configuration
- gitignore cfg/amar/ and cfg/dlt/ (private configs)

soleprint/artery/veins/jira/core/config.py

@@ -3,20 +3,24 @@ Jira credentials loaded from .env file.
 """
 
 from pathlib import Path
+
 from pydantic_settings import BaseSettings
 
 ENV_FILE = Path(__file__).parent.parent / ".env"
 
 
 class JiraConfig(BaseSettings):
-    jira_url: str
+    jira_url: str = ""  # Required for use, optional for loading
     jira_email: str | None = None  # Optional: can be provided per-request via headers
-    jira_api_token: str | None = None  # Optional: can be provided per-request via headers
+    jira_api_token: str | None = (
+        None  # Optional: can be provided per-request via headers
+    )
     api_port: int = 8001
 
     model_config = {
         "env_file": ENV_FILE,
         "env_file_encoding": "utf-8",
+        "extra": "ignore",
     }