chore: add PR template, issue templates (#1211)

* chore: add PR template, issue templates, and triage action

Adds a complete contribution quality layer to reduce maintainer triage burden:

- .github/pull_request_template.md — structured PR description with checklist
  enforcing target branch, one-concern rule, CI green, no print(), schema
  regeneration, and ADR/CONTEXT.md update requirements
- .github/ISSUE_TEMPLATE/bug_report.yml — required-field YAML form; GitHub
  blocks submission until reproduction steps and environment are filled in
- .github/ISSUE_TEMPLATE/feature_request.yml — required problem/proposal fields
  with duplicate-check prompt
- .github/ISSUE_TEMPLATE/config.yml — disables blank issues; funnels questions
  to Discussions
- .github/workflows/triage.yml — auto-closes issues and PRs from accounts
  younger than 7 days, and closes anything with an empty or unfilled body

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

* chore: simplify to templates only — drop triage workflow

- PR template: target main (not dev), strip TS/pnpm/ADR checklist items
  that aren't enforced in the current codebase yet
- Remove .github/workflows/triage.yml — account-age and auto-close
  policy needs explicit maintainer sign-off before automation

Issue templates and config.yml are unchanged.

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

* chore: drop CI-green item — no active CI workflow yet

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

* chore: upgrade templates with feedback from #1222 and #1211 thread

Bug report:
- Add install method dropdown (Docker / pip / Windows / macOS)
- Split into separate Expected Behaviour and Actual Behaviour fields
- Add Model / Backend field for LLM-related bugs
- Add prerequisites checkboxes: duplicate search, security vuln redirect,
  running latest main
- Add Additional Information free-text field

Feature request:
- Add prerequisites checkboxes (searched issues, searched discussions,
  concrete proposal)
- Add area dropdown (Chat/Email/Calendar/Cookbook/etc.) for triage
- Rename and tighten Problem and Solution fields
- Add Prior Art / Related Issues field
- Add Alternatives Considered field

config.yml:
- Replace two generic links with three specific ones: Q&A discussions,
  Ideas discussions, and GitHub Security Advisories for vulnerabilities

PR template:
- Rename Summary section with clearer placeholder text
- Add Linked Issue section (Fixes #NNN)
- Add How to Test section with numbered placeholder steps
- Add Screenshots section for UI changes
- Add duplicate-search checklist item
- Remove No print() item (style note, not a structural requirement)

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

---------

Co-authored-by: Claude Sonnet 4.6 <noreply@anthropic.com>

.github/ISSUE_TEMPLATE/bug_report.yml

@@ -0,0 +1,103 @@
+name: Bug Report
+description: Report a reproducible bug in Odysseus.
+labels: ["bug"]
+
+body:
+  - type: markdown
+    attributes:
+      value: |
+        **Before submitting:** search [open issues](https://github.com/pewdiepie-archdaemon/odysseus/issues)
+        and [discussions](https://github.com/pewdiepie-archdaemon/odysseus/discussions) first.
+        Duplicate reports slow things down.
+
+        For security vulnerabilities, **do not open a public issue** —
+        use [GitHub Security Advisories](https://github.com/pewdiepie-archdaemon/odysseus/security/advisories/new)
+        and read [SECURITY.md](https://github.com/pewdiepie-archdaemon/odysseus/blob/main/SECURITY.md) first.
+
+  - type: checkboxes
+    id: prerequisites
+    attributes:
+      label: Prerequisites
+      options:
+        - label: I searched [open issues](https://github.com/pewdiepie-archdaemon/odysseus/issues?q=is%3Aissue+is%3Aopen) and [discussions](https://github.com/pewdiepie-archdaemon/odysseus/discussions) and did not find an existing report of this bug.
+          required: true
+        - label: This is **not** a security vulnerability. (Vulnerabilities go to [GitHub Security Advisories](https://github.com/pewdiepie-archdaemon/odysseus/security/advisories/new) — see [SECURITY.md](https://github.com/pewdiepie-archdaemon/odysseus/blob/main/SECURITY.md).)
+          required: true
+        - label: I am running the latest code from `main`.
+          required: true
+
+  - type: dropdown
+    id: install-method
+    attributes:
+      label: Install Method
+      options:
+        - Docker (docker compose up)
+        - Manual Python install (pip / venv)
+        - Windows native (launch-windows.ps1)
+        - macOS app (build-macos-app.sh / start-macos.sh)
+        - Other (describe in the reproduction steps below)
+    validations:
+      required: true
+
+  - type: dropdown
+    id: os
+    attributes:
+      label: Operating System
+      options:
+        - Linux
+        - macOS
+        - Windows
+        - Other
+    validations:
+      required: true
+
+  - type: textarea
+    id: steps
+    attributes:
+      label: Steps to Reproduce
+      description: Exact steps that reliably trigger the bug. The more specific, the faster this gets fixed.
+      placeholder: |
+        1. Go to ...
+        2. Click / type ...
+        3. Observe ...
+    validations:
+      required: true
+
+  - type: textarea
+    id: expected
+    attributes:
+      label: Expected Behaviour
+      description: What should have happened?
+    validations:
+      required: true
+
+  - type: textarea
+    id: actual
+    attributes:
+      label: Actual Behaviour
+      description: What actually happened? Include the full error message if there is one.
+    validations:
+      required: true
+
+  - type: textarea
+    id: logs
+    attributes:
+      label: Logs / Screenshots
+      description: Paste relevant terminal output or attach screenshots. Remove API keys, passwords, and personal data before pasting.
+      render: text
+
+  - type: input
+    id: model-backend
+    attributes:
+      label: Model / Backend (if relevant)
+      description: "e.g. Ollama + llama3.2:latest, vLLM + mistral-7b, OpenAI API, Anthropic API"
+      placeholder: "Ollama + llama3.2:latest"
+
+  - type: textarea
+    id: additional-info
+    attributes:
+      label: Additional Information
+      description: Anything else that might help — browser console errors, related issues, things you already tried, or environment quirks.
+      placeholder: |
+        - Any other context goes here.
+        - If you are willing to submit a PR that fixes this, mention it here.