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.

scripts/conductor-run.sh

@@ -1,5 +1,5 @@
 #!/bin/bash
-# conductor-run.sh - Starts the long-lived local KTX daemon for Conductor.
+# conductor-run.sh - Starts the long-lived local ktx daemon for Conductor.
 #
 # Uses a fixed port because Conductor runs this workspace in nonconcurrent mode.
 
@@ -82,9 +82,9 @@ resolve_uv_for_project() {
   printf '%s\n' "$workspace_uv"
 }
 
-echo "=== Starting KTX for Conductor ==="
+echo "=== Starting ktx for Conductor ==="
 
-echo "Building KTX packages..."
+echo "Building ktx packages..."
 pnpm run build
 
 KTX_UV_BIN="$(resolve_uv_for_project "pyproject.toml")"
@@ -94,5 +94,5 @@ if [ -f ".venv/bin/activate" ]; then
   source .venv/bin/activate
 fi
 
-echo "KTX daemon: http://127.0.0.1:8765"
+echo "ktx daemon: http://127.0.0.1:8765"
 exec uv run ktx-daemon serve-http --host 127.0.0.1 --port 8765