fix: improve docs workflow and module discovery

- Fix get_modules_by_depth.sh to avoid filtering 'core' directories
  - Remove overly broad "core" exclusion pattern
  - Keep "*.core" for actual core dump files
  - Resolves issue where directories named 'core' were incorrectly filtered

- Refactor docs workflow from path-based detection to mode selection
  - Replace is_root logic with explicit --mode parameter
  - Add --mode full: generate complete documentation (modules + project-level)
  - Add --mode partial: generate module documentation only
  - Default to full mode for better user experience
  - Simplify configuration by removing complex path comparison logic

These changes provide better control over documentation generation
and fix directory discovery issues in Python projects with core/ folders.

.claude/scripts/get_modules_by_depth.sh

@@ -58,7 +58,7 @@ build_exclusion_filters() {
 
         # OS and editor files
         ".DS_Store" "Thumbs.db" "desktop.ini"
-        "*.stackdump" "core" "*.core"
+        "*.stackdump" "*.core"
 
         # Cloud and deployment
         ".serverless" ".terraform" "terraform.tfstate"