fix+docs: Bug-Fixes, vollstaendige Dokumentation v8

Bug-Fixes:
- hermes_agent.py: asyncio.get_event_loop() → get_running_loop() (Python 3.10+)
- routers/hermes.py: Thread-Lock fuer Whisper-Init, HERMES_WINDOWS_USER Import,
  Piper stderr logging, __import__ Anti-Pattern entfernt
- routers/memory.py: SQLite WAL-Mode, Kategorie-Enum-Validierung (user/instruction/stable/versioned/ephemeral)
- HermesPanel.svelte: findLast() → reverse().find() (Browser-Kompatibilitaet)
- ConnectPanel.svelte: Hardcoded Username durch Platzhalter ersetzt

Docs:
- CLAUDE.md: komplett aktualisiert (v7+v8, Hermes, Memory, alle Env-Vars)
- ROADMAP.md: v7+v8 als erledigt, naechste Features (v8.1-v9.1)
- README.md: komplett neu geschrieben (Agentic OS Konzept, alle Features)

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

routers/memory.py

@@ -9,6 +9,7 @@ Alle MCP-Tools teilen denselben Speicher via mcp_memory.py-Wrapper.
 import sqlite3
 import uuid
 from datetime import datetime, timezone
+from enum import Enum
 from typing import Optional
 
 from fastapi import APIRouter, Depends, HTTPException
@@ -28,6 +29,7 @@ def _db() -> sqlite3.Connection:
         MEMORY_DB.parent.mkdir(parents=True, exist_ok=True)
         _db_conn = sqlite3.connect(str(MEMORY_DB), check_same_thread=False)
         _db_conn.row_factory = sqlite3.Row
+        _db_conn.execute("PRAGMA journal_mode=WAL")  # sicherer bei concurrent FastAPI-Threads
         _db_conn.execute("""
             CREATE TABLE IF NOT EXISTS memories (
                 id         TEXT PRIMARY KEY,
@@ -47,15 +49,23 @@ def _db() -> sqlite3.Connection:
     return _db_conn
 
 
+class _MemCategory(str, Enum):
+    user        = "user"
+    instruction = "instruction"
+    stable      = "stable"
+    versioned   = "versioned"
+    ephemeral   = "ephemeral"
+
+
 class _MemIn(BaseModel):
     content: str
-    category: str = "stable"   # stable | versioned | ephemeral
+    category: _MemCategory = _MemCategory.stable
     source: str = "manual"
 
 
 class _MemUp(BaseModel):
     content: Optional[str] = None
-    category: Optional[str] = None
+    category: Optional[_MemCategory] = None
 
 
 def _row(r: sqlite3.Row) -> dict: