Update determine_pattern_dir to allow defaults

Author: Martin Jackson

README.md

@@ -50,7 +50,7 @@ Alternatively, set `VALUES_SECRET` to an **existing** file whose name ends with
 | `playbooks/load_bootstrap_secrets_only.yml` | **Bootstrap only**: same pattern discovery plays and `pattern_settings`, then only bootstrap inject (with retries). **Fails** if no bootstrap file is found. Does **not** read `secretLoader.disabled` or load the primary file. |
 | `playbooks/display_secrets_info.yml` | Loads and displays parsed primary secrets (using the backend from `values-global`). If a bootstrap file exists, also parses and displays it with backing store `none`. Missing bootstrap is not an error. |
 
-Typical usage sets `-e pattern_dir=...` to the pattern checkout (and relies on `values-global.yaml` there via `pattern_settings`).
+Typical usage passes the pattern checkout as `pattern_dir` (for example `-e pattern_dir=/path/to/pattern`). If you omit it, the same resolution as `pattern_settings` applies: `PATTERN_DIR`, then `PWD`, then the `pwd` command.
 
 `playbooks/install.yml` imports `load_secrets.yml` after the pattern install playbook, so the combined bootstrap-then-primary flow runs during install when secret loading is enabled.
 

playbooks/determine_pattern_dir.yml

@@ -1,17 +1,24 @@
 ---
+# Resolves pattern_dir the same way as the pattern_settings role (extra-vars, PATTERN_DIR, PWD, pwd),
+# then fails if still unset. Used by display_secrets_info, load_values_global, load_bootstrap_secrets*, etc.
 - name: Determine pattern dir
   hosts: localhost
   connection: local
   gather_facts: false
   become: false
-  vars:
-    pattern_dir: ''
   tasks:
-    - name: Fail if directory is not set
+    - name: Resolve pattern_dir from extra-vars, PATTERN_DIR, PWD, or pwd
+      ansible.builtin.include_role:
+        name: pattern_settings
+        tasks_from: resolve_overrides.yml
+
+    - name: Fail if pattern directory is not set after resolution
       ansible.builtin.fail:
-        msg: "pattern_dir variable must be set"
-      when: pattern_dir | length == 0
+        msg: >-
+          pattern_dir is not set. Pass -e pattern_dir=/path/to/pattern, export PATTERN_DIR to that path,
+          or run the playbook from the pattern directory so PWD is correct.
+      when: pattern_dir | default('') | string | trim | length == 0
 
     - name: Set pattern_dir fact for future plays
       ansible.builtin.set_fact:
-        pattern_dir: '{{ pattern_dir }}'
+        pattern_dir: "{{ pattern_dir | string | trim }}"