refactor: enforce ktx naming and AGENTS.md compliance sweep (#289)

Align the tree with AGENTS.md/CLAUDE.md conventions:

- Rewrite user-facing strings, docs, and tests to lowercase `ktx`
  (no bare uppercase `KTX` tokens remain outside literal identifiers).
- Drop the legacy `historicSql` migration path and its now-unused
  helpers, per the no-backward-compat rule.
- Remove `as unknown as` / `any` casts: narrow `BaseTool` generics to
  `z.ZodObject`, add a typed `createLookerClient`, and delete the dead
  `getParametersSchema`/`toAnthropicFormat` pre-AI-SDK helpers.
- Use `InvalidArgumentError` for Commander parse failures.
- Finish the adapter→connector prose conversion in the `ktx.yaml` docs
  while keeping the literal `adapters` config key.

python/ktx-daemon/src/ktx_daemon/__init__.py

@@ -1,4 +1,4 @@
-"""Portable compute package for KTX."""
+"""Portable compute package for ktx."""
 
 from collections.abc import Callable
 from importlib.metadata import PackageNotFoundError, version

python/ktx-daemon/src/ktx_daemon/__main__.py

@@ -1,4 +1,4 @@
-"""Command entry point for one-shot KTX daemon compute operations."""
+"""Command entry point for one-shot ktx daemon compute operations."""
 
 from __future__ import annotations
 
@@ -67,7 +67,7 @@ def build_parser() -> argparse.ArgumentParser:
     )
     serve_http = subcommands.add_parser(
         "serve-http",
-        help="Run the KTX daemon portable compute HTTP server",
+        help="Run the ktx daemon portable compute HTTP server",
     )
     serve_http.add_argument("--host", default="127.0.0.1")
     serve_http.add_argument("--port", type=int, default=8765)

python/ktx-daemon/src/ktx_daemon/app.py

@@ -1,4 +1,4 @@
-"""FastAPI app factory for the KTX daemon semantic compute server."""
+"""FastAPI app factory for the ktx daemon semantic compute server."""
 
 from __future__ import annotations
 
@@ -142,8 +142,8 @@ def create_app(
             )
 
     app = FastAPI(
-        title="KTX Daemon",
-        description="Stateless portable compute server for KTX.",
+        title="ktx Daemon",
+        description="Stateless portable compute server for ktx.",
         version=VERSION,
         lifespan=lifespan,
     )

python/ktx-daemon/src/ktx_daemon/code_execution.py

@@ -1,4 +1,4 @@
-"""Portable in-process code execution helpers for KTX daemon.
+"""Portable in-process code execution helpers for ktx daemon.
 
 This module preserves the host application's current Python execution behavior.
 It runs code with Python ``exec`` in the current process and does not provide

python/ktx-daemon/src/ktx_daemon/database_introspection.py

@@ -1,4 +1,4 @@
-"""Portable database introspection helpers for KTX daemon."""
+"""Portable database introspection helpers for ktx daemon."""
 
 from __future__ import annotations
 

python/ktx-daemon/src/ktx_daemon/embeddings.py

@@ -1,4 +1,4 @@
-"""Portable embedding compute helpers for KTX daemon."""
+"""Portable embedding compute helpers for ktx daemon."""
 
 from __future__ import annotations
 

python/ktx-daemon/src/ktx_daemon/semantic_layer.py

@@ -1,4 +1,4 @@
-"""Semantic-layer compute helpers for the KTX daemon package."""
+"""Semantic-layer compute helpers for the ktx daemon package."""
 
 from __future__ import annotations