Remove plans/ directory (P0/P1/P2 work complete)

README.md

@@ -55,22 +55,13 @@ SteamCache2 is a blazing fast download cache for Steam, designed to reduce bandw
 
 ### Development Workflow
 
-```bash
-# Run all tests and start the application (default target)
-make
+Use `make` for the majority of common development tasks. The Makefile handles running tests, linting, hygiene checks, building, running the application, and other routine boilerplate work.
 
-# Run only tests
-make test
+Run `make help` to see the full list of available commands.
 
-# Run with debug logging
-make run-debug
+This is the preferred approach for day-to-day development. Avoid running raw `go test`, `go run`, or `golangci-lint` commands directly for routine tasks.
 
-# Download dependencies
-make deps
-
-# Show available commands
-make help
-```
+**Important rule**: Do not leave temporary review labels (P2-05, T1, I3, R2, "per Issue 7", etc.) in source code or comments. See `plans/README.md` → "Review & Implementation Hygiene" for details. `make check-review-labels` (part of `make lint`) will catch violations.
 
 ### Command Line Flags