feat(makefile): add fix target for in-place formatting

Add `make fix` that delegates to container `_fix` target to apply
formatting fixes in-place. Update docs to include the new target.

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

Author: matthew-on-git

DEVELOPMENT.md

@@ -48,6 +48,7 @@ Every DevRail-managed repo exposes these public targets:
 | `make help` | List all targets with descriptions (default target) |
 | `make lint` | Run all linters for declared languages |
 | `make format` | Run all formatters for declared languages |
+| `make fix` | Auto-fix formatting issues in-place |
 | `make test` | Run all test suites for declared languages |
 | `make security` | Run security scanners (bandit, tfsec, checkov, etc.) |
 | `make scan` | Run universal scanners (trivy, gitleaks) |

Makefile

@@ -44,8 +44,8 @@ HAS_JAVASCRIPT := $(filter javascript,$(LANGUAGES))
 # ---------------------------------------------------------------------------
 # .PHONY declarations
 # ---------------------------------------------------------------------------
-.PHONY: help lint format test security scan docs changelog check install-hooks init
-.PHONY: _lint _format _test _security _scan _docs _changelog _check _check-config _init
+.PHONY: help lint format fix test security scan docs changelog check install-hooks init
+.PHONY: _lint _format _fix _test _security _scan _docs _changelog _check _check-config _init
 
 # ===========================================================================
 # Public targets (run on host, delegate to Docker container)
@@ -66,6 +66,9 @@ check: ## Run all checks (lint, format, test, security, scan, docs)
 docs: ## Generate documentation
 	$(DOCKER_RUN) make _docs
 
+fix: ## Auto-fix formatting issues in-place
+	$(DOCKER_RUN) make _fix
+
 format: ## Run all formatters
 	$(DOCKER_RUN) make _format
 

README.md

@@ -27,6 +27,7 @@ The Makefile is the universal execution interface. Every target produces consist
 | `make help` | Show available targets (default) |
 | `make lint` | Run all linters for declared languages |
 | `make format` | Run all formatters for declared languages |
+| `make fix` | Auto-fix formatting issues in-place |
 | `make test` | Run project test suite |
 | `make security` | Run language-specific security scanners |
 | `make scan` | Run universal scanning (trivy, gitleaks) |