Add AI routing and schema export for pwcli (#32)

* Enhance help documentation by adding 'schema' subcommand details and examples for AI commands

* updated models for translate

* updated gpt models

* Add command discovery and routing functionality to CLI

* added schema

docs/help.md

@@ -7,6 +7,7 @@
 ```
 pwcli
 ├── ai (ai)
+│   ├── schema (sc) .................................... ai sc
 │   └── promptcontextlibrary (pcl) ..................... ai pcl
 │
 ├── aws (a)
@@ -73,9 +74,12 @@ Commands can be executed using their aliases. For example:
 AI-related commands
 
 #### Subcommands:
+- **schema** (alias: `sc`) - Output detailed pwcli command schema for LLM usage
 - **promptcontextlibrary** (alias: `pcl`) - Copy context files to clipboard for AI prompts
 
-**Example:** `pwcli ai pcl`
+**Examples:**
+- `pwcli ai sc`
+- `pwcli ai pcl`
 
 ---