Add shared dev environment integration

[mpryc]

Why we need this PR

Integrates the shared medik8s dev environment from medik8s/tools. Adding a small snippet to the Makefile gives all contributors access to make dev-* targets for local development and testing.

Changes made

• Makefile: Added dev environment snippet at the end. Uses a local sibling ../tools checkout if available, otherwise shallow-clones the tools repo into .tools/ on first use.
• .gitignore: Added .tools/ to ignore the auto-cloned copy.

Available targets after this change

make dev-setup              # Create Kind cluster (1 CP + 3 workers)
make dev-deploy             # Build, load image, install CRDs, deploy operator
make dev-describe           # Full summary (nodes, pods, CRs, events)
make dev-simulate-failure   # Stop kubelet on a worker -> triggers remediation
make dev-recover            # Restore all workers
make dev-teardown           # Destroy Kind cluster
make dev-help               # Show all dev targets

Also supports external clusters (OCP, etc.) with SKIP_KIND=true and ttl.sh ephemeral registry.

Which issue(s) this PR fixes

N/A — new functionality.

Test plan

• Verified make dev-setup && make dev-deploy && make dev-describe works on Kind (podman)
• Verified SKIP_KIND=true make dev-setup && SKIP_KIND=true make dev-deploy works on OCP
• Full NHC + SNR remediation flow tested end-to-end

Summary by CodeRabbit

• New Features

  • Added automatic bootstrapping for shared development workflows, with a local fallback when the shared tools configuration isn’t available.
  • Dev workflow targets now self-provision the required tools when missing and automatically load the shared configuration when present.

• Chores

  • Updated version control ignore rules to exclude locally generated development tool files under .tools/.

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[APPROVALNOTIFIER] This PR is NOT APPROVED

This pull-request has been approved by: mpryc
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[coderabbitai]

📝 Walkthrough

Walkthrough

Adds Makefile bootstrap logic for shared dev-* workflows, including fallback cloning of medik8s/tools into a local .tools/ directory when needed, and ignores .tools/ in version control.

Changes

Dev environment bootstrap

Layer / File(s)	Summary
Bootstrap logic and ignore rule Makefile, .gitignore	Makefile defines TOOLS_DIR and DEV_MK, conditionally switches to a local .tools/ checkout when the shared dev makefile is missing, includes that makefile, and .gitignore excludes .tools/.
Dev target clone rule Makefile	Adds the dev-% fallback that shallow-clones medik8s/tools into $(TOOLS_DIR), verifies $(DEV_MK), and re-invokes the requested target when the shared dev makefile is absent.

Estimated code review effort: 2 (Simple) | ~10 minutes

🚥 Pre-merge checks | ✅ 5

✅ Passed checks (5 passed)

Check name	Status	Explanation
Docstring Coverage	✅ Passed	No functions found in the changed files to evaluate docstring coverage. Skipping docstring coverage check.
Linked Issues check	✅ Passed	Check skipped because no linked issues were found for this pull request.
Out of Scope Changes check	✅ Passed	Check skipped because no linked issues were found for this pull request.
Description Check	✅ Passed	Check skipped - CodeRabbit’s high-level summary is enabled.
Title check	✅ Passed	The title clearly matches the main change: integrating the shared medik8s development environment.

✨ Finishing Touches

🧪 Generate unit tests (beta)

• Create PR with unit tests

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[coderabbitai]

Actionable comments posted: 1

🤖 Prompt for all review comments with AI agents

Verify each finding against current code. Fix only still-valid issues, skip the
rest with a brief reason, keep changes minimal, and validate.

Inline comments:
In `@Makefile`:
- Around line 549-557: The Makefile bootstrap currently clones medik8s/tools
during parse time and hides failures, so restrict the clone logic to dev-*
target paths and keep it out of unrelated targets. Update the DEV_MK bootstrap
around the existing DEV_MK/TOOLS_DIR checks so the git clone only runs when a
dev target is being invoked, and if the clone or include still fails, emit a
clear error instead of silently relying on -include.

🪄 Autofix (Beta)

Fix all unresolved CodeRabbit comments on this PR:

• Push a commit to this branch (recommended)
• Create a new PR with the fixes

---

ℹ️ Review info

⚙️ Run configuration

Configuration used: Organization UI

Review profile: CHILL

Plan: Pro

Run ID: e626ec6f-0174-4c6f-9f7a-71dc2c18c1a4

📥 Commits

Reviewing files that changed from the base of the PR and between d4a4253 and 4153ef0.

📒 Files selected for processing (2)

• .gitignore
• Makefile

[mpryc]

Depends-on: medik8s/tools#21

[coderabbitai]

Actionable comments posted: 1

🤖 Prompt for all review comments with AI agents

Verify each finding against current code. Fix only still-valid issues, skip the
rest with a brief reason, keep changes minimal, and validate.

Inline comments:
In `@Makefile`:
- Around line 554-559: The bootstrap fallback in the dev-% rule is not
idempotent and can re-clone into an existing .tools directory, causing confusing
git failures; update the Makefile logic around DEV_MK and dev-% to clean or
reuse prior state before running git clone, then verify that dev/dev.mk is
present after cloning and fail with a clear error if it is still missing. Make
sure the recursive $(MAKE) $@ path does not loop back into the same fallback
when DEV_MK remains absent, and handle repeated dev-* targets consistently by
checking the existing tools checkout before cloning.

🪄 Autofix (Beta)

Fix all unresolved CodeRabbit comments on this PR:

• Push a commit to this branch (recommended)
• Create a new PR with the fixes

---

ℹ️ Review info

⚙️ Run configuration

Configuration used: Organization UI

Review profile: CHILL

Plan: Pro

Run ID: 1ad4bd1e-2c26-40cc-af24-829a9c161651

📥 Commits

Reviewing files that changed from the base of the PR and between 4153ef0 and f7b138a.

📒 Files selected for processing (2)

• .gitignore
• Makefile

✅ Files skipped from review due to trivial changes (1)

• .gitignore