Enable additional ZIM archives for kiwix

New archives (~95G total):
- Project Gutenberg 2023 (72G) - 60,000+ public domain books
- iFixit (3.3G) - Repair guides
- Stack Exchange: SuperUser (3.7G), Math (6.9G)
- LibreTexts: Biology, Chemistry, Engineering, Mathematics, Physics, Humanities

Also:
- Fix transmission to only restart when config changes
- Update CLAUDE.md to use full ansible paths

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

CLAUDE.md

@@ -81,15 +81,13 @@ After creating a PR, run `open <pr-url>` to open it in the browser (Claude Code'
 
 ## Ansible
 
-Run playbooks from the `ansible/` directory.
-
 ```bash
 # Install collection dependencies
-ansible-galaxy collection install -r requirements.yml
+ansible-galaxy collection install -r ansible/requirements.yml
 
 # Dry-run before committing changes
-ansible-playbook playbooks/indri.yml --check --diff
+ansible-playbook ansible/playbooks/indri.yml --check --diff
 
 # Apply changes
-ansible-playbook playbooks/indri.yml
+ansible-playbook ansible/playbooks/indri.yml
 ```

ansible/roles/kiwix/defaults/main.yml

@@ -51,14 +51,14 @@ kiwix_zim_archives:
 
   # LibreTexts - Open educational resources
   - category: libretexts
-    filename: libretexts_en_biology_2025-01.zim          # 2.1G
+    filename: libretexts.org_en_bio_2025-01.zim          # 2.1G
   - category: libretexts
-    filename: libretexts_en_chemistry_2025-01.zim        # 2.0G
+    filename: libretexts.org_en_chem_2025-01.zim         # 2.0G
   - category: libretexts
-    filename: libretexts_en_engineering_2025-01.zim      # 647M
+    filename: libretexts.org_en_eng_2025-01.zim          # 647M
   - category: libretexts
-    filename: libretexts_en_mathematics_2025-01.zim      # 744M
+    filename: libretexts.org_en_math_2025-01.zim         # 744M
   - category: libretexts
-    filename: libretexts_en_physics_2025-01.zim          # 464M
+    filename: libretexts.org_en_phys_2025-01.zim         # 464M
   - category: libretexts
-    filename: libretexts_en_humanities_2025-01.zim       # 3.5G
+    filename: libretexts.org_en_human_2025-01.zim        # 3.5G

ansible/roles/transmission/tasks/main.yml

@@ -21,8 +21,19 @@
     path: ~/.config/transmission-daemon
     state: absent
 
+# Note: transmission must be stopped before modifying settings.json
+# otherwise it may overwrite our changes on shutdown
+- name: Check if settings.json needs updating
+  ansible.builtin.template:
+    src: settings.json.j2
+    dest: "{{ transmission_config_dir }}/settings.json"
+    mode: '0644'
+  check_mode: true
+  register: settings_check
+
 - name: Stop transmission before config changes
   ansible.builtin.command: brew services stop transmission-cli
+  when: settings_check.changed
   register: brew_stop
   changed_when: false
   failed_when: false