Pablan, as it stands

Self-hosted knowledge management for SMEs: a split-screen Markdown editor
whose sections an LLM refines while you write, and RAG question answering
over the documents that result. FastAPI + Postgres/pgvector on the back,
SvelteKit on the front, everything OpenAI-compatible and self-hostable.

Squashed into a single commit; the development history stays local.

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01CA43ZJda8Rbp2hKXNy8f6b

backend/app/config.py

@@ -0,0 +1,64 @@
+from functools import lru_cache
+from pathlib import Path
+from typing import Literal
+
+from pydantic_settings import BaseSettings, SettingsConfigDict
+
+# Repo-root .env for native dev; inside Docker the file is absent and
+# configuration comes from real environment variables (which take precedence).
+_REPO_ROOT = Path(__file__).resolve().parents[2]
+_ENV_FILE = _REPO_ROOT / ".env"
+
+
+class Settings(BaseSettings):
+    model_config = SettingsConfigDict(
+        env_prefix="PABLAN_", env_file=_ENV_FILE, extra="ignore"
+    )
+
+    env: Literal["development", "production"] = "development"
+    database_url: str = "postgresql+asyncpg://pablan:change-me@localhost:5432/pablan"
+
+    # Secure=false is needed for dev over plain http on non-localhost
+    # addresses (WireGuard IPs) — see .env.example.
+    cookie_secure: bool = True
+    auth_session_ttl_days: int = 14
+
+    query_retention_days: int = 90
+
+    # The shipped template catalog (repo templates/ in dev; the customer
+    # stack mounts the directory and overrides this path).
+    templates_dir: str = str(_REPO_ROOT / "templates")
+    help_dir: str = str(_REPO_ROOT / "help")
+
+    # The instance's own language: which blueprint variant the first-install
+    # starter set uses, and the fallback when a visitor states no preference.
+    # Per-user choice lives on users.locale and wins over this.
+    default_locale: Literal["de", "en"] = "de"
+
+    log_level: str = "INFO"
+    # Content debug logging (prompts/responses) — NEVER in production.
+    debug_log_prompts: bool = False
+    llm_timeout_seconds: float = 120.0
+    # How many requests Pablan lets one endpoint see at once, and how long a
+    # request waits for a free slot before it is answered with "busy". Match
+    # llm_max_parallel to the server's parallel slots (llama.cpp: --parallel).
+    # See app/llm/gate.py.
+    llm_max_parallel: int = 4
+    llm_queue_wait_seconds: float = 20.0
+    llm_max_queued: int = 24
+    job_poll_seconds: float = 1.0
+
+    chat_base_url: str = "http://localhost:8001/v1"
+    chat_api_key: str = "none"
+    chat_model: str = ""
+    utility_base_url: str = "http://localhost:8001/v1"
+    utility_api_key: str = "none"
+    utility_model: str = ""
+    embedding_base_url: str = "http://localhost:8002/v1"
+    embedding_api_key: str = "none"
+    embedding_model: str = ""
+
+
+@lru_cache
+def get_settings() -> Settings:
+    return Settings()