feat(doctor): add --issue mode and GitHub bug report template

Adds a guided 'bunx @cortexkit/opencode-magic-context@latest doctor --issue'
flow that collects environment, sanitized config, and the last 200 log
lines into a ready-to-submit Markdown report, then either submits it
directly via 'gh issue create' or opens the prefilled browser URL with a
local file to paste.

- New diagnostics module collects plugin/OpenCode versions, cross-platform
  paths, opencode/tui plugin registration state, cache version, storage
  stats, conflict detection, log file size, and recent historian dump
  summaries.
- New logs module builds the issue markdown with path/username
  sanitization and a 200-line log tail.
- runIssueFlow() reuses existing clack prompts and falls back from 'gh' to
  the bug_report.yml prefilled URL when gh is missing.
- Adds .github/ISSUE_TEMPLATE/bug_report.yml pointing users at
  'doctor --issue' for diagnostics, plus config.yml contact links.
- README documents the new flag alongside --force.

Verified locally with bun collectDiagnostics — paths are sanitized, real
plugin version detected, storage + log sizes reported.

Author: ualtinok

.github/ISSUE_TEMPLATE/bug_report.yml

@@ -0,0 +1,77 @@
+name: Bug Report
+description: Report a bug or unexpected behavior in Magic Context
+labels: ["bug"]
+body:
+  - type: markdown
+    attributes:
+      value: |
+        Thanks for reporting! To make debugging faster, please run:
+
+        ```
+        bunx @cortexkit/opencode-magic-context@latest doctor --issue
+        ```
+
+        That command collects environment info, your sanitized config, and the last 200 log lines into a local file. You can paste its contents into the Diagnostics field below, or let it submit the issue directly via `gh`.
+
+  - type: input
+    id: title
+    attributes:
+      label: Short description
+      placeholder: "ctx_reduce is not dropping tool outputs even after execute threshold"
+    validations:
+      required: true
+
+  - type: textarea
+    id: description
+    attributes:
+      label: What happened?
+      description: Describe the problem, what you expected, and what you observed. Include repro steps if you have them.
+    validations:
+      required: true
+
+  - type: textarea
+    id: diagnostics
+    attributes:
+      label: Diagnostics
+      description: Paste the output of `bunx @cortexkit/opencode-magic-context@latest doctor --issue` here, or fill in the sections below manually.
+      render: markdown
+
+  - type: input
+    id: plugin_version
+    attributes:
+      label: Plugin version
+      placeholder: "0.8.6"
+
+  - type: input
+    id: opencode_version
+    attributes:
+      label: OpenCode version
+      placeholder: "1.4.3"
+
+  - type: input
+    id: platform
+    attributes:
+      label: Platform
+      placeholder: "macOS arm64 / linux x64 / windows x64"
+
+  - type: dropdown
+    id: client
+    attributes:
+      label: Client
+      options:
+        - OpenCode Desktop
+        - OpenCode TUI (CLI)
+        - OpenCode Web
+        - Unknown
+    validations:
+      required: true
+
+  - type: textarea
+    id: logs
+    attributes:
+      label: Log output (optional)
+      description: |
+        Contents of the magic-context log, trimmed to the relevant section and sanitized
+        (remove your username and home path). The log lives under the system temp directory —
+        on macOS/Linux it's typically `/tmp/magic-context.log` or under `$TMPDIR`.
+      render: shell

.github/ISSUE_TEMPLATE/config.yml

@@ -0,0 +1,8 @@
+blank_issues_enabled: true
+contact_links:
+  - name: Documentation
+    url: https://github.com/cortexkit/opencode-magic-context#readme
+    about: Check the README for configuration, setup, and feature docs before filing an issue.
+  - name: Configuration reference
+    url: https://github.com/cortexkit/opencode-magic-context/blob/master/CONFIGURATION.md
+    about: Full reference for magic-context.jsonc options.

README.md

@@ -147,6 +147,12 @@ Use `--force` to force-clear the plugin cache even when versions match (fixes br
 bunx @cortexkit/opencode-magic-context@latest doctor --force
 ```
 
+Hit a real bug? Use `--issue` to collect environment, sanitized config, and the last 200 log lines into a ready-to-submit report. It can also open the issue directly via `gh` if you have it installed:
+
+```bash
+bunx @cortexkit/opencode-magic-context@latest doctor --issue
+```
+
 ---
 
 ## What Your Agent Gets