refactor: Rename description to tagline and description

- Renames the `description` field to `tagline` in schema and data files.
- Renames the `full_description` field to `description` in schema and data files.
- Updates all relevant YAML data files, documentation, and templates to reflect these changes.
- Adjusts character limits and descriptions for the new fields.

data/schema.json

@@ -15,16 +15,16 @@
       "format": "uri",
       "description": "URL to the repository"
     },
-    "description": {
+"tagline": {
       "type": "string",
       "minLength": 1,
       "maxLength": 120,
-      "description": "Short summary of the project"
+      "description": "Short punchy summary of the project (shown in collapsed view)"
     },
-    "full_description": {
+    "description": {
       "type": "string",
       "minLength": 1,
-      "description": "Longer detailed description of the project"
+      "description": "Full description of the project (shown when expanded)"
     },
     "install": {
       "type": "object",
@@ -66,6 +66,6 @@
       "description": "Tags for categorization"
     }
   },
-  "required": ["name", "repo", "description", "full_description"],
+  "required": ["name", "repo", "tagline", "description"],
   "additionalProperties": false
 }