chore: add pre-commit config and fix trailing whitespace/end-of-file (#3430)

issues

.github/CODEOWNERS

@@ -5,4 +5,3 @@
 /extensions/catalog.community.json @mnriem
 /integrations/catalog.community.json @mnriem
 /presets/catalog.community.json @mnriem
-

.github/ISSUE_TEMPLATE/agent_request.yml

@@ -7,7 +7,7 @@ body:
     attributes:
       value: |
         Thanks for requesting a new agent! Before submitting, please check if the agent is already supported.
-        
+
         **Currently supported agents**: Amp, Antigravity, Auggie CLI, Claude Code, Cline, CodeBuddy, Codex CLI, Cursor, Devin for Terminal, Firebender, Forge, Gemini CLI, GitHub Copilot, Goose, Hermes Agent, IBM Bob, Junie, Kilo Code, Kimi Code, Kiro CLI, Lingma, Mistral Vibe, Oh My Pi, opencode, Pi Coding Agent, Qoder CLI, Qwen Code, RovoDev ACLI, SHAI, Tabnine CLI, Trae, ZCode, Zed
 
   - type: input

.github/ISSUE_TEMPLATE/extension_submission.yml

@@ -7,7 +7,7 @@ body:
     attributes:
       value: |
         Thanks for contributing an extension! This template helps you submit your extension to the community catalog.
-        
+
         **Before submitting:**
         - Review the [Extension Publishing Guide](https://github.com/github/spec-kit/blob/main/extensions/EXTENSION-PUBLISHING-GUIDE.md)
         - Ensure your extension has a valid `extension.yml` manifest
@@ -209,9 +209,9 @@ body:
         **Tested on:**
         - macOS 14.0 with Spec Kit v0.1.0
         - Linux Ubuntu 22.04 with Spec Kit v0.1.0
-        
+
         **Test project:** [Link or description]
-        
+
         **Test scenarios:**
         1. Installed extension
         2. Configured settings
@@ -230,7 +230,7 @@ body:
         ```bash
         # Install extension
         specify extension add <extension-name> --from https://github.com/your-org/spec-kit-your-extension/archive/refs/tags/v1.0.0.zip
-        
+
         # Use a command
         /speckit.your-extension.command-name arg1 arg2
         ```

.github/ISSUE_TEMPLATE/preset_submission.yml

@@ -7,7 +7,7 @@ body:
     attributes:
       value: |
         Thanks for contributing a preset! This template helps you submit your preset to the community catalog.
-        
+
         **Before submitting:**
         - Review the [Preset Publishing Guide](https://github.com/github/spec-kit/blob/main/presets/PUBLISHING.md)
         - Ensure your preset has a valid `preset.yml` manifest

.github/PULL_REQUEST_TEMPLATE.md

@@ -19,4 +19,3 @@
 - [ ] I **did** use AI assistance (describe below)
 
 <!-- If you used AI, briefly describe how (e.g., "Code generated by Copilot", "Consulted ChatGPT for approach"): -->
-

.github/workflows/stale.yml

@@ -20,24 +20,24 @@ jobs:
           days-before-stale: 150
           # Days of inactivity before a stale issue or PR is closed (after being marked stale)
           days-before-close: 30
-          
+
           # Stale issue settings
           stale-issue-message: 'This issue has been automatically marked as stale because it has not had any activity for 150 days. It will be closed in 30 days if no further activity occurs.'
           close-issue-message: 'This issue has been automatically closed due to inactivity (180 days total). If you believe this issue is still relevant, please reopen it or create a new issue.'
           stale-issue-label: 'stale'
-          
+
           # Stale PR settings
           stale-pr-message: 'This pull request has been automatically marked as stale because it has not had any activity for 150 days. It will be closed in 30 days if no further activity occurs.'
           close-pr-message: 'This pull request has been automatically closed due to inactivity (180 days total). If you believe this PR is still relevant, please reopen it or create a new PR.'
           stale-pr-label: 'stale'
-          
+
           # Exempt issues and PRs with these labels from being marked as stale
           exempt-issue-labels: 'pinned,security'
           exempt-pr-labels: 'pinned,security'
-          
+
           # Only issues or PRs with all of these labels are checked
           # Leave empty to check all issues and PRs
           any-of-labels: ''
-          
+
           # Operations per run (helps avoid rate limits)
           operations-per-run: 250