docs: overhaul Data Store cascading guide for frontend agents

- Replaced Section 8 with 'The Hierarchy of Truth' examples.
- Added explicit rules for Vision IDs and automatic JSON parsing.
- Clarified dynamic return behavior based on the 'limit' parameter.
- Cleaned up formatting and synced to agents_sync documentation path.

app/methods/data_store_methods.py

@@ -80,16 +80,9 @@ def load_data_store_obj_w_code(
     # if for_id := redis_lookup_id_random(record_id_random=for_id, table_name=for_type): pass
     #     else: return False
 
-    if for_type and for_id:
-        sql_for_type_id = 'AND `data_store`.for_type = :for_type AND `data_store`.for_id = :for_id'
-    else:
-        sql_for_type_id = 'AND `data_store`.for_type IS NULL AND `data_store`.for_id IS NULL'
-
     sql_enabled, data['enable'] = sql_enable_part(table_name='data_store', enabled=enabled) # Reasonably safe return str and bool
     sql_limit = sql_limit_offset_part(limit=limit, offset=offset) # Reasonably safe return str
 
-    log.debug(data)
-
     sql = f"""
         SELECT *
         FROM `v_data_store` AS `data_store`
@@ -97,11 +90,11 @@ def load_data_store_obj_w_code(
             (
                 `data_store`.account_id = :account_id
                 OR `data_store`.account_id IS NULL
+                OR (`data_store`.for_type = :for_type AND `data_store`.for_id = :for_id)
             )
             AND `data_store`.code = :code
-            {sql_for_type_id}
             {sql_enabled}
-        ORDER BY `data_store`.account_id DESC, `data_store`.created_on DESC, `data_store`.updated_on DESC
+        ORDER BY `data_store`.for_id DESC, `data_store`.account_id DESC, `data_store`.created_on DESC, `data_store`.updated_on DESC
         {sql_limit};
         """
     # log.setLevel(logging.DEBUG) # DEBUG, INFO, WARNING, ERROR, EXCEPTION, CRITICAL

documentation/GUIDE__V3_FRONTEND_API.md

@@ -142,7 +142,7 @@ V3 returns machine-readable error objects in `meta.details` for failures.
 
 ## 8. Data Store Cascading Lookup (V3)
 
-V3 provides a specialized endpoint for retrieving configuration or content snippets by a human-friendly `code`. This uses a **hierarchical fallback** logic to find the best fit for the current context.
+V3 provides a specialized endpoint for retrieving configuration or content snippets by a human-friendly `code`. This uses a **hierarchical fallback** logic to find the "best fit" record for the current user and object context.
 
 ### A. The V3 Lookup Endpoint
 **Path:** `GET /v3/data_store/code/{code}`
@@ -151,16 +151,28 @@ V3 provides a specialized endpoint for retrieving configuration or content snipp
 | Parameter | Type | Required | Description |
 | :--- | :--- | :--- | :--- |
 | `for_type` | String | No | Parent object type (e.g., `event`, `person`). |
-| `for_id` | String | No | Parent object random ID. |
+| `for_id` | String | No | Parent object random ID (Vision ID). |
 | `limit` | Integer | No | **Dynamic Return:** Default `1` (returns single object). If `> 1`, returns a list. |
 
-### B. Cascading Logic (Specificity)
-The API automatically resolves the "best fit" record in the following order:
-1. **Record Specific:** Matches `for_type` + `for_id` (and account).
-2. **Account Specific:** Matches the `x-account-id` header.
-3. **Global Default:** Matches `code` where `account_id` is `NULL`.
+### B. Cascading Logic (The Hierarchy of Truth)
+The API automatically resolves the most specific record available using the following priority:
+**Object Override > Account Override > Global System Default.**
 
-### C. Example Implementation
+| Specificity | `account_id` | `for_type` | `for_id` | `code` | `Result` |
+| :--- | :--- | :--- | :--- | :--- | :--- |
+| **Global** | `NULL` | `NULL` | `NULL` | `'site_config'` | System default (blue theme). |
+| **Account** | `'abc123_rd'` | `NULL` | `NULL` | `'site_config'` | Acme Corp default (green theme). |
+| **Object** | `'abc123_rd'` | `'event'` | `'evt_xyz_rd'` | `'site_config'` | Main Conference override (gold theme). |
+
+### C. Rules for Frontend Agents
+1.  **Vision IDs Only:** Always use random string IDs (e.g., `evt_xyz_rd`) for `for_id`. Never use database integers.
+2.  **Explicit Context:** If you are within an Event or Person context, always provide `for_type` and `for_id`. The API will handle the fallback if a specific record doesn't exist.
+3.  **Automatic JSON Parsing:** If the record `type` is `'json'`, the API returns a structured object/list under the `json` key. You do not need to call `JSON.parse()`.
+4.  **Handling the Return:**
+    *   `limit=1` (Default): Returns a single **Object** in `data`.
+    *   `limit>1`: Returns a **List** of objects in `data`.
+
+### D. Example Implementation
 ```ts
 // GET /v3/data_store/code/event_launcher_main_info?for_type=event&for_id=nmBfuGFeR0k&limit=1
 export async function get_data_store_v3({ api_cfg, code, for_type, for_id, limit = 1 }) {
@@ -169,3 +181,4 @@ export async function get_data_store_v3({ api_cfg, code, for_type, for_id, limit
     return await get_object({ api_cfg, endpoint, params });
 }
 ```
+