Add GitHub issue templates, matching classic's

.github/ISSUE_TEMPLATE/bug_report.yml

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+name: Bug report
+description: Something in a plugin is broken or behaving wrong
+labels: ["bug"]
+body:
+  - type: dropdown
+    id: plugin
+    attributes:
+      label: Which plugin?
+      options:
+        - Staff Tags
+        - Radial Status
+        - Not sure / something else
+    validations:
+      required: true
+
+  - type: textarea
+    id: what-happened
+    attributes:
+      label: What happened?
+      description: What did you expect, and what did you actually get?
+    validations:
+      required: true
+
+  - type: textarea
+    id: repro
+    attributes:
+      label: Steps to reproduce
+      placeholder: |
+        1. Enable the plugin
+        2. ...
+    validations:
+      required: false
+
+  - type: input
+    id: discord-version
+    attributes:
+      label: Discord app version (Settings → About)
+      placeholder: "e.g. 343.2"
+    validations:
+      required: false
+
+  - type: textarea
+    id: logs
+    attributes:
+      label: Anything in your logs/debugger, if you have one enabled?
+    validations:
+      required: false

.github/ISSUE_TEMPLATE/config.yml

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+blank_issues_enabled: false
+contact_links:
+  - name: Core Revenge Next app issue (not a plugin)
+    url: https://github.com/revenge-mod/revenge-bundle-next/issues
+    about: If the problem is with Revenge Next itself rather than one of these plugins, report it there instead.

.github/ISSUE_TEMPLATE/feature_request.yml

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+name: Feature request / new plugin idea
+description: Something you want added to an existing plugin, or a new plugin entirely
+labels: ["enhancement"]
+body:
+  - type: dropdown
+    id: kind
+    attributes:
+      label: What kind of request is this?
+      options:
+        - New feature for an existing plugin
+        - A brand new plugin idea
+    validations:
+      required: true
+
+  - type: input
+    id: plugin
+    attributes:
+      label: Which plugin? (leave blank if this is a new plugin idea)
+      placeholder: "e.g. Staff Tags"
+    validations:
+      required: false
+
+  - type: textarea
+    id: description
+    attributes:
+      label: What do you want, and why?
+      description: The more concrete, the better - what would you actually do with it?
+    validations:
+      required: true

.github/ISSUE_TEMPLATE/plugin_broken.yml

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+name: A plugin stopped working after a Discord update
+description: The most common failure mode here - Discord renamed/removed something a plugin depends on
+labels: ["bug", "discord-update"]
+body:
+  - type: markdown
+    attributes:
+      value: |
+        Discord's internals change without notice, and plugins in this ecosystem patch those internals
+        directly - this is the single most common way something breaks here. Reports like this are
+        genuinely useful, thank you.
+
+  - type: dropdown
+    id: plugin
+    attributes:
+      label: Which plugin?
+      options:
+        - Staff Tags
+        - Radial Status
+    validations:
+      required: true
+
+  - type: dropdown
+    id: surface
+    attributes:
+      label: What stopped showing up / working?
+      description: Pick whichever's closest - helps narrow down which patch broke
+      options:
+        - Chat messages
+        - Member list
+        - Profile popout
+        - Channel header
+        - Avatar / presence indicator
+        - A slash command
+        - Not sure
+    validations:
+      required: false
+
+  - type: input
+    id: discord-version
+    attributes:
+      label: Discord app version (Settings → About)
+      placeholder: "e.g. 343.2"
+    validations:
+      required: true
+
+  - type: textarea
+    id: worked-before
+    attributes:
+      label: Did this work before, and if so, roughly when did it stop?
+    validations:
+      required: false