feat: add community files and extract proxy port constants

.github/ISSUE_TEMPLATE/feature_request.yml

@@ -0,0 +1,45 @@
+name: Feature Request
+description: Suggest a new feature or enhancement for kiji-proxy
+title: "[Feature]: "
+labels: ["enhancement"]
+body:
+  - type: markdown
+    attributes:
+      value: |
+        Thanks for taking the time to suggest an improvement! Please fill out the sections below as clearly as you can.
+
+  - type: textarea
+    id: problem
+    attributes:
+      label: Problem
+      description: What problem or limitation are you running into? Why does it matter?
+      placeholder: "e.g. I often need to X, but currently the only way to do it is Y, which is tedious because..."
+    validations:
+      required: true
+
+  - type: textarea
+    id: proposed-solution
+    attributes:
+      label: Proposed Solution
+      description: Describe the feature or change you'd like to see.
+      placeholder: "e.g. Add a config option that allows..."
+    validations:
+      required: true
+
+  - type: textarea
+    id: alternatives
+    attributes:
+      label: Alternatives Considered
+      description: Have you tried any workarounds or considered other approaches?
+      placeholder: "e.g. I tried X but it doesn't work because..."
+    validations:
+      required: false
+
+  - type: textarea
+    id: context
+    attributes:
+      label: Additional Context
+      description: Any other context, screenshots, or references that might help.
+      placeholder: "Links, related issues, example configs, etc."
+    validations:
+      required: false

.github/PULL_REQUEST_TEMPLATE.md

@@ -0,0 +1,22 @@
+## Description
+
+<!-- What does this PR do? Provide a clear, concise summary of the changes. -->
+
+## Linked Issue
+
+Closes #
+
+## Testing Done
+
+<!-- Describe what you tested and how. Include manual steps and/or test names. -->
+
+- [ ] Unit tests pass (`go test ./...` / `npm test`)
+- [ ] Manually verified the change works as expected
+
+## Checklist
+
+- [ ] Code follows the project's style guidelines (`gofmt`, `go vet`, linting)
+- [ ] New or updated tests cover the changes (if applicable)
+- [ ] Documentation has been updated (if applicable)
+- [ ] No unrelated changes are included in this PR
+- [ ] PR title is descriptive and references the issue where relevant

CONTRIBUTING.md

@@ -0,0 +1,77 @@
+# Contributing to kiji-proxy
+
+Thanks for your interest in contributing. This document covers how to get set up, run tests, and submit changes.
+
+## Dev Setup
+
+**Prerequisites:** Go 1.21+, Node.js 18+, make (optional but handy).
+
+```bash
+# Clone your fork
+git clone https://github.com/<your-username>/kiji-proxy.git
+cd kiji-proxy
+
+# Install backend dependencies
+cd src/backend && go mod download
+
+# Install frontend dependencies
+cd ../../src/frontend && npm install
+```
+
+Copy and edit the development config before running:
+
+```bash
+cp src/backend/config/config.development.json config.json
+# Edit config.json with your API keys / settings
+```
+
+Start the backend:
+
+```bash
+go run ./src/backend/cmd/...
+```
+
+Start the frontend (separate terminal):
+
+```bash
+cd src/frontend && npm run dev
+```
+
+## Running Tests
+
+```bash
+# Backend unit tests
+cd src/backend && go test ./...
+
+# Backend tests with race detector
+go test -race ./...
+
+# Frontend tests
+cd src/frontend && npm test
+```
+
+## Branching & PR Conventions
+
+- Branch off `main`. Use short, descriptive names:
+  - `feat/<topic>` for new features
+  - `fix/<topic>` for bug fixes
+  - `docs/<topic>` for documentation-only changes
+- Keep commits focused; one logical change per commit.
+- Reference the issue your PR addresses with `Closes #<issue>` in the PR description.
+- All CI checks must pass before a PR is merged.
+- PRs require at least one approving review.
+
+## Code Style
+
+**Go:**
+- Run `gofmt -w .` and `go vet ./...` before committing.
+- Follow standard Go naming conventions.
+- Add comments for exported types, functions, and constants.
+
+**TypeScript / Frontend:**
+- Run `npm run lint` before committing.
+- Prefer explicit types over `any`.
+
+## Reporting Issues
+
+Use the GitHub issue tracker. Please search for existing issues before opening a new one. Include reproduction steps, expected vs. actual behavior, and relevant logs.

src/backend/config/config.go

@@ -73,6 +73,12 @@ type Config struct {
 	Proxy              ProxyConfig `json:"Proxy"`
 }
 
+// DefaultForwardProxyPort is the default port for the forward (HTTP) proxy.
+const DefaultForwardProxyPort = ":8080"
+
+// DefaultTransparentProxyPort is the default port for the transparent proxy.
+const DefaultTransparentProxyPort = ":8081"
+
 // ModelVariantTrained is the full-precision model variant.
 const ModelVariantTrained = "trained"
 
@@ -242,7 +248,7 @@ func DefaultConfig() *Config {
 			MistralProviderConfig:   defaultMistralProviderConfig,
 			CustomProviderConfig:    defaultCustomProviderConfig,
 		},
-		ProxyPort:          ":8080",
+		ProxyPort:          DefaultForwardProxyPort,
 		ONNXModelPath:      "",
 		TokenizerPath:      "",
 		ModelVariant:       ModelVariantTrained,
@@ -261,7 +267,7 @@ func DefaultConfig() *Config {
 		},
 		Proxy: ProxyConfig{
 			TransparentEnabled: true,
-			ProxyPort:          ":8081",
+			ProxyPort:          DefaultTransparentProxyPort,
 			CAPath:             caPath,
 			KeyPath:            keyPath,
 			EnablePAC:          true, // Enable PAC by default for automatic proxy configuration

src/backend/server/server.go

@@ -307,7 +307,7 @@ func (s *Server) Start() error {
 func (s *Server) startTransparentProxy() {
 	proxyPort := s.config.Proxy.ProxyPort
 	if proxyPort == "" {
-		proxyPort = ":8080"
+		proxyPort = config.DefaultForwardProxyPort
 	}
 
 	log.Printf("Starting transparent proxy on port %s", proxyPort)