Add agents.md for AI-assisted bug fix skills

AGENTS.md

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+CLAUDE.md

CLAUDE.md

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+# CLAUDE.md — WSO2 Gateway Controllers (Policy Hub)
+
+## What This Repo Is
+
+A library repository of **independent Go policy modules** for the WSO2 API Platform Gateway. Each policy under `policies/` is a self-contained Go module with its own `go.mod`, tests, and `policy-definition.yaml`. Policies are compiled into the gateway at build time — this repo does not run as a standalone service.
+
+## Build & Test
+
+```bash
+# Test a specific policy (this is the most common task)
+cd policies/<policy-name>
+go test -v -race ./...
+
+# Build a specific policy
+cd policies/<policy-name>
+go build ./...
+
+# Test all policies
+for dir in policies/*/; do (cd "$dir" && go test -v -race ./...); done
+```
+
+There is no root-level build — each policy is independent.
+
+**Integration testing** requires the `wso2/api-platform` repo. See `gateway/dev-policies/README.md` in that repo for the full procedure.
+
+## Policy Interface
+
+All policies implement the SDK interface from `github.com/wso2/api-platform/sdk/gateway/policy/v1alpha`:
+
+```go
+type Policy interface {
+    Mode() ProcessingMode
+    OnRequest(ctx *RequestContext, params map[string]interface{}) RequestAction
+    OnResponse(ctx *ResponseContext, params map[string]interface{}) ResponseAction
+}
+```
+
+- `Mode()` declares what the policy needs (request/response headers and/or body)
+- Policies return actions (`RequestContinue`, `RequestError`, `ImmediateResponse`) — they don't modify state directly
+- Parameters are defined in `policy-definition.yaml` using JSON Schema with WSO2 extensions
+
+## Coding Conventions
+
+- **Formatting**: `gofmt` / `goimports`
+- **Copyright header**: All Go files must start with the Apache 2.0 copyright block (check existing files for format)
+- **Imports**: Standard library first, then third-party. Alias the policy SDK import for clarity
+- **Logging**: Use `log/slog` for structured logging — not `fmt.Println` or `log.Printf`
+- **Package names**: Short, lowercase, single-word (e.g., `package apikey`, `package cors`)
+- **File names**: Snake-case matching the policy name (e.g., `apikey.go`, `basicauth.go`)
+- **Tests**: Co-located `*_test.go` files. Use hand-written mock structs (embed the interface, override needed methods) — no mock generation frameworks. Table-driven tests with `t.Run()`. Always run with `-race` flag.
+- **Naming**: `Test{PolicyName}_{Scenario}` or `Test{PolicyName}Policy_{Action}_{Condition}`
+
+## Key Gotchas
+
+- Each policy is an **independent Go module** — run commands from inside `policies/<name>/`, not from the repo root
+- `policy-definition.yaml` has two parameter types: `parameters` (user-configurable per API) and `systemParameters` (resolved from gateway `config.toml` at startup via `wso2/defaultValue`)
+- Versions are managed per-policy via git tags: `policies/<policy-name>/v<X.Y.Z>`
+- Code owners for `go.mod`/`go.sum` changes: @pubudu538, @malinthaprasan, @Krishanx92