v3 standardize template file names

BETA-V3/gems-and-gpts/templates/story-tmpl.txt

@@ -0,0 +1,31 @@
+# Story {EpicNum}.{StoryNum}: {Short Title Copied from Epic File}
+
+## Status: { Draft | Approved | Done }
+
+## Story
+
+- As a [role]
+- I want [action]
+- so that [benefit]
+
+## Acceptance Criteria (ACs)
+
+{ Copy the Acceptance Criteria numbered list }
+
+## Tasks / Subtasks
+
+- [ ] Task 1 (AC: # if applicable)
+  - [ ] Subtask1.1...
+- [ ] Task 2 (AC: # if applicable)
+  - [ ] Subtask 2.1...
+- [ ] Task 3 (AC: # if applicable)
+  - [ ] Subtask 3.1...
+
+## Story Progress Notes
+
+### Agent Model Used: `<Agent Model Name/Version>`
+
+### Completion Notes List
+{Any notes about implementation choices, difficulties, or follow-up needed}
+
+### Change Log