Sync templates and workflows from org .github repo

.github/ISSUE_TEMPLATE/bug.yaml

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+name: Bug Report
+description: Report a bug or defect
+labels: ["bug"]
+body:
+  - type: markdown
+    attributes:
+      value: |
+        ## Type
+        Bug
+
+  - type: textarea
+    id: why
+    attributes:
+      label: Why
+      description: Explain the business motivation and impact with respect to current Dirac bottlenecks
+    validations:
+      required: true
+
+  - type: dropdown
+    id: urgency
+    attributes:
+      label: Urgency
+      options:
+        - Critical
+        - High
+        - Medium
+        - Low
+    validations:
+      required: true
+
+  - type: textarea
+    id: description
+    attributes:
+      label: Description
+      description: What is the bug? What is the expected vs actual behavior?
+    validations:
+      required: true
+
+  - type: textarea
+    id: steps
+    attributes:
+      label: Steps to Reproduce
+      description: How can we reproduce this issue?
+    validations:
+      required: true
+
+  - type: textarea
+    id: additional-context
+    attributes:
+      label: Additional Context
+      description: Screenshots, error messages, environment details, etc.
+    validations:
+      required: false

.github/ISSUE_TEMPLATE/feature.yaml

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+name: Feature Request
+description: Propose a new feature or enhancement
+labels: ["feature"]
+body:
+  - type: markdown
+    attributes:
+      value: |
+        ## Type
+        Feature
+
+  - type: textarea
+    id: why
+    attributes:
+      label: Why
+      description: Explain the business motivation and impact with respect to current Dirac bottlenecks
+    validations:
+      required: true
+
+  - type: dropdown
+    id: urgency
+    attributes:
+      label: Urgency
+      options:
+        - Critical
+        - High
+        - Medium
+        - Low
+    validations:
+      required: true
+
+  - type: textarea
+    id: description
+    attributes:
+      label: Description
+      description: What feature are you proposing? What problem does it solve?
+    validations:
+      required: true

.github/ISSUE_TEMPLATE/spike.yaml

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+name: Spike / Investigation
+description: Technical exploration or research task
+labels: ["spike"]
+body:
+  - type: markdown
+    attributes:
+      value: |
+        ## Type
+        Spike
+
+  - type: textarea
+    id: why
+    attributes:
+      label: Why
+      description: Explain the business motivation and impact with respect to current Dirac bottlenecks
+    validations:
+      required: true
+
+  - type: dropdown
+    id: urgency
+    attributes:
+      label: Urgency
+      options:
+        - Critical
+        - High
+        - Medium
+        - Low
+    validations:
+      required: true
+
+  - type: textarea
+    id: goal
+    attributes:
+      label: Goal
+      description: What question(s) are we trying to answer? What do we need to learn?
+    validations:
+      required: true
+
+  - type: textarea
+    id: success-criteria
+    attributes:
+      label: Success Criteria
+      description: What does "done" look like for this investigation?
+    validations:
+      required: true

.github/pull_request_template.md

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+## Linked Issue
+<!-- This PR must be linked to an issue -->
+Closes #
+
+## Design Decisions
+<!--
+What tradeoffs did you consider with respect to current constraints?
+Include advice for those working on this code in the future.
+Reference the bottleneck.
+-->
+
+
+## Checklist
+- [ ] Written at least one regression test (if a bug)
+- [ ] Checked for existence of or written a smoke test (if one doesn't exist)
+- [ ] Read every line of code
+- [ ] Started the docker container
+- [ ] Checked manually that the fix works
+- [ ] Added documentation of design decisions
+- [ ] Written CONCISE code

.github/workflows/check-linked-issue.yml

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+name: Check Linked Issue
+
+on:
+  pull_request:
+    types: [opened, edited, synchronize]
+
+jobs:
+  check-issue-link:
+    runs-on: ubuntu-latest
+    steps:
+      - name: Check for linked issue
+        uses: actions/github-script@v7
+        with:
+          script: |
+            const pr = context.payload.pull_request;
+            const body = pr.body || '';
+
+            // Check for "Closes #123", "Fixes #123", "Resolves #123", etc.
+            const issuePattern = /(close[sd]?|fix(es|ed)?|resolve[sd]?)\s+#\d+/i;
+
+            if (!issuePattern.test(body)) {
+              core.setFailed('❌ PR must be linked to an issue using "Closes #123", "Fixes #123", or "Resolves #123"');
+            } else {
+              console.log('✅ PR is properly linked to an issue');
+            }