docs: baked a lot of API docs

docs/API/clientStore.md

@@ -7,4 +7,58 @@ references:
 
 The Client Store API provides a simple key-value store for client-specific states and preferences.
 
-${spacelua.renderApiDocumentation("clientStore")}
+<!--#lua spacelua.renderApiDocumentation("clientStore") -->
+## clientStore.delete
+
+`clientStore.delete(key)`
+
+Deletes a client-specific value from the local key-value store.
+
+**Parameters:**
+
+- `key` (`string`) — Key to delete.
+
+**Example:**
+
+```lua
+clientStore.delete("theme")
+```
+
+## clientStore.get
+
+`clientStore.get(key)`
+
+Gets a client-specific value from the local key-value store.
+
+**Parameters:**
+
+- `key` (`string`) — Key to read.
+
+**Returns:**
+
+- Value — Stored value, or nil when absent.
+
+**Example:**
+
+```lua
+local theme = clientStore.get("theme")
+```
+
+## clientStore.set
+
+`clientStore.set(key, value)`
+
+Stores a client-specific value in the local key-value store.
+
+**Parameters:**
+
+- `key` (`string`) — Key to set.
+- `value` — Value to store.
+
+**Example:**
+
+```lua
+clientStore.set("theme", "dark")
+```
+<!--/lua-->
+