feat(llm-inference): Day 1 playbook for RTX 3090 vLLM stack on astro-orbiter

- nvidia-driver-595-open (already installed 2026-08-03, idempotent)
- Python venv + vLLM 0.26.0 (already installed, idempotent)
- Gemma 2 27B model download via HuggingFace hub
- systemd vllm-serve.service on port 8000
- Hermes provider integration on carousel-of-progress
- vault_hf_token added to group_vars/all/vault
- ansible.cfg: vault_password_file set to absolute path
- inventory: astro_orbiter group added

Run with: env -u ANSIBLE_VAULT_PASSWORD_FILE ansible-playbook -i inventory.yml playbooks/day1_deploy_llm_inference.yml

ansible/roles/llm-inference/tasks/integration.yml

@@ -0,0 +1,44 @@
+---
+# ------------------------------------------------------------------------------
+# FILE: roles/llm-inference/tasks/integration.yml
+# DESCRIPTION: Phase 6 — Wire astro-orbiter into Hermes as a secondary provider.
+#              Writes a provider config fragment to carousel-of-progress
+#              (the Hermes host) so FRIDAY crons can route to the local model.
+#
+# Hermes provider config lives at ~/.hermes/config.yaml on carousel.
+# This task uses the lineinfile/blockinfile approach to add the provider
+# entry idempotently without clobbering the existing config.
+#
+# NOTE: Hermes must be restarted on carousel after this task runs.
+#       Manual step — JARVIS will notify Ryan.
+# ------------------------------------------------------------------------------
+
+- name: Check if astro-orbiter provider already configured in Hermes
+  ansible.builtin.command:
+    cmd: grep -c "astro-orbiter" /home/wed/.hermes/config.yaml
+  register: provider_check
+  changed_when: false
+  failed_when: false
+  delegate_to: carousel-of-progress
+
+- name: Add astro-orbiter as Hermes secondary provider
+  ansible.builtin.blockinfile:
+    path: /home/wed/.hermes/config.yaml
+    marker: "# {mark} ANSIBLE MANAGED — astro-orbiter vLLM provider"
+    insertafter: "^providers:"
+    block: |
+      # astro-orbiter — local RTX 3090 vLLM inference
+      - name: astro-orbiter
+        type: openai-compatible
+        base_url: http://{{ hostvars['astro-orbiter']['ansible_host'] }}:{{ llm_serve_port }}/v1
+        model: {{ llm_hf_model }}
+        api_key: none
+  when: provider_check.stdout == "0"
+  delegate_to: carousel-of-progress
+  notify: restart hermes
+
+- name: Remind operator to restart Hermes on carousel
+  ansible.builtin.debug:
+    msg: >
+      Phase 6 complete. Hermes on carousel-of-progress has been updated.
+      Restart Hermes manually or via: systemctl --user restart hermes-gateway hermes-dashboard