chore: adopt engineering standard v1.0.0

Adopt the org engineering standard (its-consulting/standards @ v1.0.0).

Adds baseline governance/CI/policy files rendered from the standard's
templates and pins .standards-version=1.0.0. Vendored OPA/Rego policies
under .standards/policies/ so CI runs the gate locally (no cross-repo dep).
Placeholders ({{ORG}}/{{REPO}}/{{OWNER_HANDLE}}/{{MAINTAINER_EMAIL}}) filled in.
Existing files that differ were left untouched by the adopter.

Automated rollout. Files created: 15.

.github/ISSUE_TEMPLATE/bug_report.md

@@ -0,0 +1,52 @@
+---
+name: Bug report
+about: Report something that is broken or behaves incorrectly
+title: "bug: <short summary>"
+labels: [bug, triage]
+assignees: []
+---
+
+<!--
+Rendered into <repo>/.github/ISSUE_TEMPLATE/ by adopt-standard.sh.
+SECURITY: do NOT paste secrets, private keys, tokens, or production hostnames.
+If this is a security vulnerability, do NOT file a public issue — see SECURITY.md.
+-->
+
+## Summary
+
+<!-- One sentence: what is wrong? -->
+
+## Steps to reproduce
+
+1.
+2.
+3.
+
+## Expected behaviour
+
+<!-- What you expected to happen. -->
+
+## Actual behaviour
+
+<!-- What actually happened. Include error output (redact any secrets). -->
+
+```text
+
+```
+
+## Environment
+
+- Repo version / commit:
+- Adopted standard version (`.standards-version`):
+- OS / runtime:
+- CI or local:
+
+## Impact
+
+- [ ] Blocks work / production
+- [ ] Workaround exists
+- [ ] Cosmetic / minor
+
+## Additional context
+
+<!-- Links, screenshots (no secrets), related issues. -->

.github/ISSUE_TEMPLATE/config.yml

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+# Issue chooser config — rendered into <repo>/.github/ISSUE_TEMPLATE/ by
+# adopt-standard.sh. Disables blank issues so every report uses a template,
+# and routes security reports away from the public tracker.
+blank_issues_enabled: false
+contact_links:
+  - name: Security vulnerability (private)
+    url: https://github.com/its-consulting/REISE-TEST/security/advisories/new
+    about: >-
+      Do NOT open a public issue for a security problem. Report privately per
+      SECURITY.md (no secrets/keys/tokens in the report; rotate first if leaked).
+  - name: Question / discussion
+    url: https://github.com/its-consulting/REISE-TEST/discussions
+    about: For usage questions and open-ended discussion, use Discussions.

.github/ISSUE_TEMPLATE/feature_request.md

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+---
+name: Feature request
+about: Propose new functionality or a change to existing behaviour
+title: "feat: <short summary>"
+labels: [enhancement, triage]
+assignees: []
+---
+
+<!--
+Rendered into <repo>/.github/ISSUE_TEMPLATE/ by adopt-standard.sh.
+If this proposes a change to a rule, contract, or default, expect to record an ADR
+(docs/adr/NNNN-*.md) before it is implemented — see CONTRIBUTING.md.
+-->
+
+## Problem / motivation
+
+<!-- What problem does this solve? Who feels the pain, and when? -->
+
+## Proposed solution
+
+<!-- What you'd like to happen. Be concrete. -->
+
+## Alternatives considered
+
+<!-- Other approaches and why they are worse/better. -->
+
+## Scope & impact
+
+- [ ] Backward compatible (`MINOR`)
+- [ ] Breaking — consumers must act (`MAJOR`)
+- [ ] Needs an **ADR** (decision about a rule/contract/default)
+- [ ] Needs an **SOP** and/or **Policy** change
+- [ ] Affects CI / deploy / secrets handling
+
+## Additional context
+
+<!-- Links, prior art, related issues/ADRs. -->