refactor: move getConf function into LlmClient class as private method

feat: add constructor parameters to LlmClient with fallback to config values

refactor: replace global $conf access with getConf method in LlmClient

fix: update ChromaDBClient constructor call with missing parameters

feat: make ChromaDBClient parameters mandatory and pass them from action.php

fix: remove duplicate property declarations in ChromaDBClient

refactor: replace direct $conf access with getConf method in ChromaDBClient

fix: resolve ChromaDB connection issue by using correct host and port variables

fix: update Exception to \Exception in catch blocks

fix: use fully qualified Exception class name in ChromaDBClient

fix: replace undefined constants with DokuWiki plugin configuration in ChromaDB client initialization

fix: replace undefined constants with DokuWiki plugin configuration values

feat: use DokuWiki plugin configuration for ChromaDB client settings

refactor: move configuration to proper files and add descriptions

Moved to root.

Renamed.

fix: add proper namespace to ChromaDBClient instantiation

fix: resolve LlmClient class not found error by adding proper namespace prefix

fix: resolve class not found errors by using relative namespace references

fix: rename llm_client_plugin_dokullm class to LlmClient for proper autoloading

fix: add missing namespace to llm_client.php to resolve class not found error

fix: replace require_once calls with proper autoloading in action.php

fix: add proper namespace to ChromaDBClient instantiation

fix: update parseFilePath call to use namespaced version in chromadb_cli.php

fix: update ChromaDBClient references to use proper namespace and improve collection existence check