myco-community-pr-review

name	myco:community-pr-review
description	Use this skill when reviewing or merging any community PR in unifi-mcp — even if the user just says "take a look at this PR" or "can we merge this." Covers the quality gate checklist (f-string logger ban, Ruff lint, validator registration, doc site update ordering), the fork-edit model for trusted contributors, org-fork push limitations, dual-subagent review, PR body standards, live smoke tests, mutating cycles, the unresponsive-first-time-contributor fork-edit exception, and the close-and-redirect pattern. Also covers community infrastructure setup (.github/ health files, issue routing, bug report template design) and evidence-first bug triage protocol. Apply this skill before approving any externally-authored PR, before running the merge command, when auditing merged PRs retroactively, and when setting up community engagement infrastructure.
managed_by	myco
user-invocable	true
allowed-tools	Read, Edit, Write, Bash, Grep, Glob

Community PR Review and Merge

Community PRs go through a fixed quality checklist before merge. For trusted contributors (level99 has 7+ merged PRs), the maintainer commits fixes directly to the contributor's fork branch rather than requesting round-trip revisions — this preserves attribution while eliminating latency. An exception exists for first-time contributors who are historically unresponsive: when the fix is trivial (ruff format, simple doc change), apply fork-edit rather than request changes. This skill documents the full workflow from first look to merge, including technical validation for PRs that touch UniFi API tool implementations.

Prerequisites

• PR is open and CI workflow state is understood (see Step 0b for first-time contributor gotcha)
• You have push access to the contributor's fork (needed for the fork-edit model)
• AGENTS.md is current — it is the canonical source for hard bans
• For first-time contributors: check prior PR history to assess responsiveness (72+ hour silence threshold for fork-edit exception eligibility)
• For PRs touching tool implementations or API handlers: a live UniFi controller must be reachable to run smoke tests
• Makefile three-layer generation pipeline: make generate regenerates committed artifacts, make check-generated checks for drift, make pre-commit runs the full chain (format → generate → lint → test → drift checks). Run make pre-commit before opening any PR that modifies generated artifacts.

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Step 0b — First-Time Contributor CI Auth Gate (Critical Gotcha)

When a first-time contributor opens a PR from a fork, GitHub queues all CI workflows with status action_required silently. The workflows do NOT run automatically. No error is shown to the contributor — they see a blank CI box in the PR.

You must manually authorize the workflow run in the GitHub UI:

1. Go to the PR Actions tab
2. Scroll to the pending workflow(s)
3. Click "Approve and run" on each queued workflow

Do this before asking the contributor to make changes or before running your own review tests. Without this step, you will review against stale code or outdated test results, and the contributor will believe their PR is broken when it's just the CI gate.

This gotcha affects every first-time contributor, including level99 on their first PR.

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Subagent Decomposition (For Complex PRs)

For PRs with significant code changes or security implications, split the review across two subagents rather than doing a single-pass review:

1. Code review subagent — correctness, security, quality gates (Gates 1–4 below)
2. Test coverage subagent — test completeness, coverage gaps, test pattern compliance

Before dispatching either, check out the branch locally and run git log origin/main..HEAD to enumerate commits. This gives both subagents a shared commit list for scoped analysis.

The dual-subagent split was established for complex ACL PRs — it catches both code correctness issues and test coverage gaps that a single-pass review misses.

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Step 1 — Run the Quality Gate Checklist

First, classify the PR type (Gate 0), then work through the applicable gates in order.

Gate 0: PR Type Classification — Routes the Checklist

Determine whether this is a feature addition PR or a governance/structural refactor PR before running any other gate.

Feature addition PR — adds new tools, managers, or capabilities → Apply the design-fit criterion first: does the new tool or manager belong in this codebase, or does it duplicate existing functionality / violate the intended scope? A PR that passes all mechanical gates but adds a tool that's outside the project's design intent should be redirected (Principle #6) rather than merged. Only after confirming design fit should you run Gates 1–4.

Governance/structural refactor PR — reorganizes field definitions, introduces shared Pydantic models, changes base class hierarchy, or implements a field-symmetry sub-issue → Run the structural-correctness path instead:

1. Pydantic inheritance correct? — If a shared base model is introduced, does it accurately represent the common fields? Are subclass fields genuinely distinct from the base?
2. Field coverage complete? — Does the shared model cover all field variants used by the resource's create, read, list, and update surfaces? No field should be accessible via list/read but absent from the shared model.
3. Type symmetry correct? — Field types in the shared model must be compatible with both read-surface output and create/update input. Name-match alone is insufficient — a field can appear in both surfaces but fail silently if types diverge (e.g., source_macs: list[str] returned by list tools vs. source_macs: str accepted by create). This is enforced by the field-symmetry CI gate (the field-symmetry pattern, formalised in the field-symmetry milestone and rolled out across phases).
4. No field leakage? — Fields belonging to one resource variant must not silently appear on another through inheritance.
5. Matches issue spec? — Compare against the linked GitHub issue. Every scoped item should be implemented; nothing out of scope should be added.
6. Pattern symmetric with AGENTS.md rule? — The implementation must align with the field-symmetry governance rule in AGENTS.md, not diverge from it.

Gates 1–4 (f-string logger, Ruff lint, validator registry, doc site, shared validator blast radius) still apply to governance PRs for any new or modified tool/manager files — but the structural questions above are the primary gate.

Why the split matters: The ACL shared-field-model pilot (level99) was reviewed with the feature-addition checklist. The structural questions were asked only because the reviewer recognized the PR type. A structural refactor can pass Gates 1–3 cleanly while still violating inheritance structure, field coverage, or type symmetry — the feature-addition checklist gives false confidence on governance PRs.

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Gate 1: Lint Checks and F-String Logger — Hard Blocker

Primary targets: All files the PR touches. F-strings specifically in *_manager.py files.

1A: Ruff Lint Enforcement

Run the full lint gate that CI enforces:

make lint

This invokes Ruff on all modified files and fails on any violations. Do NOT merge a PR with lint failures. The project uses Ruff as the canonical linter; violations are hard blockers.

If the PR introduces lint errors, request fixes via fork-edit (trusted contributors) or a review comment (first-time contributors).

Cross-package import check: When a PR adds a new cross-package import (e.g., unifi-network importing from unifi-core), verify the dependency is declared in pyproject.toml. PRs that add cross-package imports without updating pyproject.toml silently skip the check-pin-alignment CI gate, which enforces version floor consistency across packages. If the import is new and no pyproject.toml change is present, flag it as a potential blocker and request an explicit floor bump to the imported package's minimum version.

1B: F-String Logger — Hard Blocker

Primary target: Every *_manager.py file the PR touches.

Scan for f-string logger calls and replace any hits with %s-style lazy formatting:

# BLOCKED
logger.info(f"Found {count} devices on {network}")

# REQUIRED
logger.info("Found %s devices on %s", count, network)

Why the manager layer is the blind spot: Tool files (*_tools.py) tend to get this right because they're reviewed more often. Manager files (*_manager.py) are where f-string loggers keep appearing. In past reviews, the tool layer used %s correctly but the manager layer introduced dozens of f-string calls. Always check manager files explicitly.

Implicit concatenation is invisible to grep: Adjacent string literals cannot be reliably caught by automated scripts. This survived a large automated migration in the past and was only caught by manual review. Scan manually for this pattern when logger calls span lines.

Full-payload logging promoted to INFO level: A logger.debug call that dumps a full JSON payload is acceptable at DEBUG level but becomes production noise and data-exposure risk if promoted to logger.info. Watch for this in manager files. All full-payload log calls must use logger.debug.

# BLOCKED: full payload at INFO level
logger.info("Firewall policy response: %s", json.dumps(response))

# REQUIRED: full payload at DEBUG level only
logger.debug("Firewall policy response: %s", json.dumps(response))

No-issue-refs ban extends to test docstrings and comment strings: Hardcoded #NNN GitHub issue or PR numbers embedded in test docstrings, pytest parameterize IDs, or inline comment strings are banned under the same no-issue-refs rule as source code. These literals survive into the package wheel and create dangling stale references that are invisible to the f-string logger scanner. When the PR touches test files, scan them manually for #\d+ embedded in string literals and docstrings.

Why this is a hard ban: F-string loggers eagerly evaluate all arguments even when the log level is suppressed. On deployments with debug logging disabled, this creates unnecessary overhead on every suppressed call.

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Gate 2: Pydantic Model Wiring — Silent Failure Risk

Target: Any PR introducing a new tool or manager for a domain that has create/update tools.

New domains must define a pydantic model in packages/unifi-core/src/unifi_core/<server>/models/<domain>.py and wire it into the tool layer. A domain without a model silently bypasses field validation — unknown or read-only fields pass through unchecked.

Check that each new domain has a corresponding model with MUTABLE_FIELDS / READ_ONLY_FIELDS frozensets and to_controller_create / to_controller_update helpers. Verify the tool layer calls to_controller_update(fields) (not a raw dict pass-through) for update tools.

The to_controller_update gotcha: When a model exists but the tool bypasses it and passes raw caller args directly to the manager, the model's field validation is silently skipped. Confirm the tool calls to_controller_update(fields) and passes the result, not the original dict.

Redaction policy must be threaded, not hardcoded: When a new resource-type PR introduces a resolver or route that returns sensitive fields, verify redact_sensitive=True is passed through the call chain from route to serializer as a parameter — not hardcoded as a local default. A resolver that hardcodes redaction behavior instead of accepting it as an argument silently diverges from callers that need the opposite setting. Check this whenever Gate 2 or Gate 3.5 involves a new resource-type PR.

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Gate 3: Doc Site Update — Ordering Gate

Target: Any PR that adds, renames, or removes tools.

The doc site must be updated as part of the same PR — not as a follow-up. The ordering matters: the doc site should be updated after the tool code is finalized but before merge, so the published docs stay in sync with the merged code at every point in history.

Note: docs/index.html is a static marketing site HTML file, not a generated artifact. Marketing site changes must be made and reviewed manually, separate from the tool documentation sweep.

Static-docs checklist (hand-maintained, not covered by the generator or Gate 3.5's make check-generated): When a PR adds a new tool, these five files require a manual edit each and are easy to miss because no CI gate catches them — a past PR missed all five and required a follow-up commit:

• README.md
• docs/ARCHITECTURE.md
• apps/network/README.md (or the relevant app's README)
• apps/network/docs/tools.md (or the relevant app's tools doc)
• plugins/unifi-network/skills/unifi-network/SKILL.md (or the relevant app's plugin skill file)

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Gate 3.5: New-Tool Registration Completeness — Generated Artifact Drift

Target: Any PR that adds a new tool function or modifies tool dispatch registration.

A new tool may pass Gates 1–3 while still causing silent failures if it bypasses required registration layers. Verify all three before approving:

1. Serializer projection — Confirm the tool's response flows through the project's serialization/projection layer. A tool that returns raw internal objects instead of projected response models silently exposes unexpected types to MCP clients.

2. Dispatch/action registration — If the tool category participates in the project's action dispatch layer (for routing tool calls), confirm the new tool is registered. A tool missing from the dispatcher is silently unreachable via that path even when correctly listed in the manifest. Dispatch-override translator required for mismatched arg names: when the tool's argument name differs from the manager's kwarg name (e.g., tool exposes update_data but the manager method expects entry_data), the dispatch registration must include an explicit translator/mapping — otherwise the dispatcher passes the wrong kwarg and the call fails or silently drops the argument.

3. Generated artifact regen — Verify make generate was run on the PR branch and all committed generated artifacts (manifest, REST docs, schema files) match. Run make check-generated locally to confirm no drift. Artifact drift is a silent correctness failure — it does not fail lint but causes behavioral divergence between the code and what clients discover.

Note: make pre-commit runs the full chain (format → generate → lint → test → drift checks). If the contributor did not run it, make check-generated will surface the gap immediately.

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Gate 4: Shared Pydantic Model Defaults — Blast Radius Check

Target: Any PR that modifies a shared <Domain>Base pydantic model in packages/unifi-core.

If a PR adds non-None defaults to mutable fields on a shared base model, every update tool that uses the model will silently inject those defaults when the caller omits the field — a data-loss bug with blast radius across all tools that import the model.

Hard blocker pattern:

# DANGEROUS — non-None default on shared base model field
# (illustrative; substitute the actual <Domain>Base class name from the PR diff)
class <DomainBase>(BaseModel):
    create_allow_respond: bool = False   # silently overwrites on update
    schedule: dict = {"mode": "ALWAYS"}  # silently overwrites on update

The rule: Non-None defaults belong only in create-specific subclasses or create-specific code paths. Shared base model fields must use = None. Any PR that adds non-None defaults to a shared base model field is a hard blocker.

Check for it whenever the PR diff touches a <Domain>Base class that both create and update tools inherit from.

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Step 1.5 — API-Touching PRs: Live Validation Requirements

For any PR that modifies UniFi MCP tool implementations, fixes API integration bugs, or adds new handlers, apply additional technical validation before merge. The UniFi controller is stateful and mock-based tests do not catch real-world edge cases.

Smoke Test Coverage (All API-Touching PRs)

Run scripts/live_smoke.py against a live controller — not a mock — before opening or approving the PR.

# Run read-only + preview smoke tests against the network server
# NOTE: The API server is 'unifi-api-server' (not 'unifi-api')
python scripts/live_smoke.py --server unifi-api-server --phase safe

# Run all servers (network + protect + access)
python scripts/live_smoke.py --server all --phase safe

What "passing" means: each tool returns a structurally valid response; no unexpected errors or stack traces; list tools return at least the expected schema shape even with no controller objects.

Independent maintainer smoke is mandatory — contributor's run does not substitute: Even when a contributor has already run live smoke tests and embedded results in the PR body, the maintainer must run a full independent validation suite. Contributor runs confirm the code works in their environment; maintainer runs confirm it against the project's reference hardware and catch environment-specific divergence that the contributor cannot reproduce. This is a non-optional standing rule.

Gotcha: A tool already broken before the PR is still your responsibility to flag. Don't silently skip known-broken tools — note them explicitly in the PR description.

Gotcha: Mock tests give false confidence. Response shapes differ between controller versions, and some fields only appear when specific configuration exists.

Gotcha: HA/shadow mode transient failures are environment issues, not code bugs. If live smoke tests fail with "resource temporarily unavailable" or "sync in progress," verify the HA cluster has stabilized. Retry after 30–60 seconds. Do not block merge on HA transient failures.

Gotcha — MCP plugin invokes the published PyPI package, not local branch code. When you run tool calls through the MCP plugin in Claude Code (or any MCP client), the plugin loads the installed (published) package — not your local working tree or the PR branch. A fix that only exists on a branch will not be exercised via the plugin until it is published. Use scripts/live_smoke.py directly (not the plugin) when verifying branch-local changes, and confirm the fix reaches production by running the plugin after the release tag is pushed.

Gotcha — enum-hint PRs: harness defaults miss the change entirely. When a PR adds enum-value hints or restricts accepted values for a tool parameter, scripts/live_smoke.py invokes each tool with default arguments only and exercises none of the constrained paths. Run a targeted script that explicitly passes each new enum value and asserts the response shape is correct (or fails predictably for invalid values).

Gotcha — hardware-gated tools: deferral requires four conditions. Some tools succeed only with specific attached hardware. Before blocking merge on a live test failure, confirm all four: (a) the failing tool targets optional hardware (e.g., Access controller), (b) the test environment lacks that hardware, (c) the failure message indicates absence ("device not found" / "hardware unavailable"), not a logic or auth error, and (d) the same tool passes on an environment with the hardware attached. If all four hold, document the deferral explicitly in the PR description.

Gotcha — HTTP 401 on uiprotect bootstrap path is benign noise. Live smoke runs against a controller with Protect enabled emit HTTP 401 on the uiprotect bootstrap path during library startup. This is the library's startup probe and is expected — not an authentication failure. Do not block merge or file a bug on a 401 from this specific path.

API Family Boundary Check (V2 vs. Integration)

Target: Any PR that adds or modifies tools exposing UniFi API identifiers.

The UniFi API has two distinct identifier families: V2 ObjectIDs (UUID format, newer controllers) and Integration UUIDs (legacy format). Tools must not mix identifier families in the same resource surface — doing so creates silent data-loss bugs when downstream integrations receive mismatched ID types.

Family boundary rule: Each tool's input and output must be consistently rooted in one identifier family. All nested references must match the primary resource's ID family.

If the PR introduces mixed families, request fixes before merge. This is a hard blocker.

Mutating Cycle Tests (Create/Update/Delete PRs)

For any PR that touches create, update, or delete handlers, run a full mutating cycle:

1. Create — create the resource via the tool; capture the returned ID.
2. Partial update — update only a subset of fields.
3. Verify field preservation — read back and confirm fields you did NOT update are unchanged.
4. Delete — remove the resource and confirm it is gone (expect 204 or equivalent).

Why field preservation matters: The UniFi API silently drops fields not included in a PUT/PATCH body. The verify step is the only reliable way to catch silent field zeroing.

New-Parameter Coverage (Read-Tool PRs that Add Optional Params)

scripts/live_smoke.py calls every tool with default values only — it exercises none of the new code paths. A targeted in-process pass is required: build a small Python script under scripts/ that calls each new parameter with at least one non-default value and asserts on the response shape. Delete the script after verification — it's one-shot validation, not a durable harness.

Docker Compose Verification (Shape/Description/Default Changes)

For PRs that change tool descriptions, response shapes, or parameter schemas, verify both discovery paths a real LLM client uses:

1. Pre-loaded path (unifi_load_tools then list_tools) — confirms full JSON schema reaches MCP clients
2. Lazy-execute path (unifi_execute(tool, arguments)) — confirms description text carries new param semantics (schemas do not appear at the lazy-discovery tier). unifi_execute auto-promotes the tool into the loaded set after first call.

"Fully Additive" Claim Audit

When a PR body claims "fully additive," diff every response shape against main. Any field that disappears from the default path is a breaking change. Gate the narrowing behind an opt-in flag, or explicitly document it as an intentional breaking change.

Cross-Platform Validation (Windows-Targeting PRs)

For any PR that adds or modifies Windows-specific behavior (PowerShell prereq scripts, .exe executable detection, CRLF line endings), validate the following from macOS before approving:

1. Plugin bundle .ps1 presence — unzip the plugin bundle and confirm .ps1 scripts are included: unzip -l <bundle>.zip | grep '\.ps1'. Missing scripts mean Windows prereq flows will silently fail to load.
2. Stdio MCP auth probe — invoke the MCP server via stdio with intentionally bogus credentials and confirm the error response is human-readable (not a generic opaque "MCP error"). Windows users hit the stdio auth path first; an opaque error leaves them with no recovery action.
3. Prereq script CRLF and .exe detection — read the modified Windows prereq scripts and confirm CRLF handling and .exe suffix detection are correct. These regressions are invisible to macOS test runs.

You cannot execute .ps1 scripts directly from macOS, but these three checks catch the most common Windows regression classes without requiring Windows hardware.

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Step 1.5b — AI-Bot vs Human Contributor Handling

AI-Bot PRs: Close in Favor of In-House Work

When an AI-Bot submits a fix to an area with parallel in-house work, close it with:

Thank you for the contribution. We're already working on this area in-house
(see issue #NNN). Our version includes tests, live smoke validation, and full
audit coverage. We'll proceed with the in-house approach rather than merging
parallel work. Closed in favor of issue #NNN.

There is no goodwill concern — a bot is a tool whose value is the idea, not the effort.

Human Contributors: Merge or Encourage Forward

• If the PR is salvageable, use the fork-edit model (Step 2) to integrate their work
• If the PR is unsalvageable, use Principle #6 (close-and-redirect) but include meaningful credit
• Always acknowledge the effort, even if you don't merge the code

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Step 1b — Post Feedback With the Right Review Type

When you find merge blockers in Step 1, submit your GitHub review as request-changes, not as comment. This prevents accidental merge and signals mandatory work clearly.

Structure your review body with explicit sections:

## Hard Blockers (must fix before merge)
- [ ] Replace f-string loggers in modified manager files
- [ ] Register new tool in validator registry

## Minor Items (nice-to-have)
- Consider renaming X for consistency with Y

Hard blockers are items from Gates 1–4. Use the comment review type only when you have zero hard blockers and are leaving suggestions.

Wording preference: Write maintainer PR comments in first person ("I ran the live smoke tests and found...") rather than passive/impersonal phrasing — this reads as direct maintainer accountability rather than a generated report.

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Hard Blockers (must fix before merge)

See Gates 1–4 above for detailed checklists. Summary:

• F-string loggers in any modified file (Gate 1B)
• Ruff lint violations (Gate 1A)
• Missing Pydantic model wiring for new domains (Gate 2)
• Doc site not updated for tool additions/removals (Gate 3)
• Non-None defaults on shared base model fields (Gate 4)
• Mixed API identifier families (Step 1.5)

Minor Items (nice-to-have)

• Naming alignment with existing conventions
• Test coverage for edge cases not on the happy path
• PR body prose (not blocking, but worth noting)

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Step 2 — Apply Fixes (Fork-Edit Model)

If you found gaps in Step 1, don't request changes — fix them directly on the contributor's fork branch. This is the established model for trusted contributors and for unresponsive first-time contributors with trivial fixes.

# Add the contributor's fork as a remote (one-time setup)
git remote add <contributor> https://github.com/<contributor>/unifi-mcp.git

# Verify and update the remote URL if stale (e.g., after the unifi-network-mcp → unifi-mcp
# repo rename, or if the fork was recreated since the last PR)
git remote get-url <contributor>
git remote set-url <contributor> https://github.com/<contributor>/unifi-mcp.git  # if URL is wrong

# Fetch and check out their branch
git fetch <contributor>
git checkout -b review/<pr-branch> <contributor>/<pr-branch>

# Make your fixes, commit with attribution context, then push back
git push <contributor> HEAD:<pr-branch>

Tip: gh pr checkout <PR-number> resolves the PR's head ref directly without requiring a named remote. Use this when the remote URL may be stale — it bypasses the rename/recreate gotcha entirely.

Rebase Before Push — When Branch Is Behind Main

"N commits behind main" is a branch-protection gate, not proof of a real conflict. GitHub's branch-protection banner ("This branch is out-of-date with the base branch") fires purely on commit count and can be satisfied by a clean, non-conflicting rebase. Do not assume actual file-overlap conflicts exist until you've checked.

First, trial the rebase on a throwaway local ref so you don't touch the contributor's fork or force-push until you know whether real conflicts exist:

# From the checked-out review branch, trial on a disposable ref:
git fetch origin main
git checkout -b trial/<pr-branch> review/<pr-branch>
git rebase origin/main
# Clean rebase (no conflicts) -> gate-blocked-but-clean; proceed to push below.
# Conflicts reported -> resolve them on this throwaway ref first, or hand back to the
# contributor if the conflict touches logic you shouldn't resolve unilaterally.

When another PR lands on main after the contributor's branch point, the contributor's branch must be rebased before merge to avoid a merge commit. Do this maintainer-side rather than requesting a contributor round-trip:

# Once the trial rebase is confirmed clean (or conflicts are resolved), repeat on the real review branch:
git checkout review/<pr-branch>
git rebase origin/main
# Resolve any conflicts, then push back with --force-with-lease:
git push --force-with-lease <contributor> HEAD:<pr-branch>

--force-with-lease is required for the post-rebase push — a plain git push will be rejected as non-fast-forward, and --force risks overwriting any commits the contributor added between your fetch and push. --force-with-lease fails safely if the remote has moved since your last fetch.

Trusted contributor definition: Level99 qualifies (7+ merged PRs). For first-time or low-history contributors, prefer review comments so they learn the patterns.

Unresponsive First-Time Contributor — Fork-Edit Exception

When a first-time contributor is historically unresponsive (72+ hours no response) AND the fix is trivial and mechanical (ruff format, logger replacement, simple doc fix), apply fork-edit instead of requesting changes.

Org Forks — Push Limitation

The fork-edit model only works for personal forks. Org forks block git push back even when "Allow edits from maintainers" is checked — that checkbox is scoped to personal accounts only.

Fork type	Can push fixes?	Action
Personal fork	✅ Yes	Fork-edit model
Org fork	❌ No	Merge PR as-is, then commit cleanup to main in a follow-up

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Step 3 — Verify PR Body Standards

Before merging, confirm the PR body includes: What changed, Why, and Testing notes (including live smoke test output for API-touching PRs).

API-Touching PR Body: Minimum Requirements

1. Tool summary — List every tool fixed or added, grouped by category.
2. Embedded live test output — Paste raw terminal output (not a prose summary) in a <details> block.
3. Issue references — #N format in both the commit message and the PR body for reliable auto-close.

Gotcha — post-merge PR body edits do not trigger GitHub autoclose. If issue references were missing at merge time and you add #N to the PR body afterward, GitHub does NOT retroactively close the linked issue — autoclose only fires from the merge event itself. For retroactive linking, post an explicit closing comment on each affected issue and close it manually.

When a PR surfaces broader scope (Principle #5)

If reviewing a PR uncovers a pattern warranting a wider architectural fix, open a separate GitHub issue and link it in the PR body. Use Principle #5 when: the PR itself is salvageable but the idea it surfaces is too big to carry in this PR.

When the PR itself is unsalvageable — Close-and-Redirect (Principle #6)

1. Extract valid proposals — open a new GitHub issue capturing genuine good ideas
2. Implement in-house — if high-value, plan to implement on main
3. Credit the contributor — close with a comment acknowledging them and linking the new issue

Principle #5 vs. Principle #6 — Decision Matrix

Situation	Principle	Action
PR is good; it just surfaced a bigger idea	#5	Keep PR → merge; open separate issue
PR has too many concerns to fix cleanly	#6	Close PR → extract ideas; implement in-house
PR has mechanical gaps (logger, registry)	Fork-edit	Fix directly on fork; don't close
Contributor is first-time/low-history	Review comments	Request changes; don't close unless clearly out of scope

---

Step 4 — Merge

Gotcha — mergeStateStatus: BLOCKED: GitHub's mergeable field and mergeStateStatus are independent. A PR can show mergeable: MERGEABLE while mergeStateStatus is still BLOCKED (e.g., required approvals missing, required status checks pending, branch protection rules active). Always confirm both before running the merge command:

gh pr view <PR-number> --json mergeStateStatus,reviewDecision,mergeable

mergeStateStatus: BLOCKED means the PR cannot be merged regardless of mergeable. Resolve the blocking condition (get missing approvals, wait for pending checks) before proceeding.

# Squash-merge is the repo standard — one clean commit per PR on main
gh pr merge <PR-number> --squash

Squash-and-merge is the default: it keeps main linear with a single commit per PR rather than carrying every intermediate or force-push commit from the contributor's fork branch.

Merge strategy override: The squash default can be overridden on explicit user instruction. If the user asks for a merge commit (--merge) to preserve the contributor's individual commits, apply it without hesitation — do not silently revert to the default. Acknowledge the override explicitly.

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Sequential PR Artifact Conflicts

When two community PRs both modify the same generated artifacts (GraphQL schema, REST docs, or manifest files), the second PR becomes conflicting after the first is merged.

Resolution:

1. Review both PRs before deciding merge order — earlier detection minimizes rebase cycles.
2. After merging the first PR, rebase the second onto updated main.
3. Regenerate the affected artifacts on the rebased branch.
4. Push the regenerated artifacts and wait for CI to re-run.
5. Proceed with the standard review checklist on the rebased branch.

Do not merge both PRs in rapid succession without first checking for shared artifact dependencies.

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Post-Merge Audit Pattern

If a PR was merged without running this checklist, run a retroactive audit:

git diff --name-only <merge-commit>^1 <merge-commit>

Then run Gates 1–4 against those files. If gaps are found, open a follow-up PR immediately.

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Community Infrastructure Setup

Set up .github/ infrastructure when the project goes public or when a new issue category emerges. This is the upstream foundation that makes PR triage scalable.

The standard layout is: .github/ISSUE_TEMPLATE/ (structured forms), .github/config.yml (routing rules), CONTRIBUTING.md (contribution guidelines including the evidence-first doctrine), and SUPPORT.md (support channels: Discussions for questions, tracker for confirmed bugs only).

config.yml Routing

Route sensitive and support traffic away from Issues before it arrives:

# .github/config.yml
blank_issues_enabled: false
contact_links:
  - name: Security Vulnerability
    url: https://github.com/ORG/REPO/security/advisories/new
    about: Report a security vulnerability via GitHub Security Advisories
  - name: Usage Question / Support
    url: https://github.com/ORG/REPO/discussions
    about: Ask questions and get help in GitHub Discussions

blank_issues_enabled: false forces all issues through form templates, preventing unstructured filings. Security reports go to Advisories (private by default); support questions go to Discussions so the issue tracker stays actionable.

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Bug Report Template Design

The bug report form collects hardware-specific context that prevents multi-comment follow-up cycles. Because unifi-mcp behavior varies by controller firmware, hardware SKU, and install method, collecting this context at first filing is essential.

Required Fields (never make optional)

Field	Type	Why required
Controller hardware	Dropdown	API behavior varies by hardware family
UniFi OS version	Text	Firmware version determines which API fields are present
Install method	Text	Determines whether aiounifi version is pinned vs. flexible
Client OS	Text	Needed for install-method-specific issues

Controller hardware dropdown options: UDM Pro, UDM Pro Max, UDM SE, UDM (base), UDR / UDR7, UCG Max / UCG Ultra / UCG Fiber, Cloud Key Gen2 / Gen2+, Self-hosted (Linux), Self-hosted (Docker), UniFi-hosted (Site Manager / Cloud Console), Other, N/A — not an MCP server bug.

Per-application version fields (Network, Protect, Access): label as "Required if reporting a bug in this app." GitHub Issue Forms don't support conditional required — enforce via description text.

AI-Agent Context Fields (optional — four separate fields)

Because unifi-mcp is used by AI agents, many reported bugs are agent misuse rather than server bugs. Use four separate optional fields: AI model used, exact prompt, tool calls observed (render: shell), and raw tool output sanitized (render: json). Optional to avoid friction-stalling non-AI bugs.

Template impact: Bugs filed without the template required multiple follow-up comments to get controller info. Bugs filed with the template (hardware + raw API output on first filing) often yield a fix within minutes of triage.

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Evidence-First Issue Triage

Do not implement code changes based on user reports without first establishing reproduction evidence. UniFi API behavior varies by firmware — a defensive patch without understanding the variance is either unnecessary or treats a symptom rather than the root cause.

Triage Checklist (execute in order)

1. Check template completeness — Did the reporter provide controller hardware, OS version, and install method? If not, request those fields before proceeding.

2. Establish reproduction — Run a live smoke test against a real controller, or request raw API output from the reporter. The live-smoke Docker environment is the reference reproduction point.

3. Inspect raw API payloads — Before any code change, get the raw JSON from the relevant controller endpoint. The missing field may be present under a different name, absent only in older firmware, or already handled by the codebase.

4. Rule out alternative explanations:

   • Version drift (plugin users have pinned aiounifi; source installs may not)
   • Cached vs. live data: the stat/sta endpoint is live-polled; the rest/user snapshot is updated infrequently — timing determines what you see
   • API contract differences between hardware families at the same OS version

5. Confirm hypothesis before coding — Only after steps 1–4 confirm the bug is real and understood should you begin implementation.

Gotcha: AI-generated analysis without reproduction — If an AI assistant proposes a code fix for a bug report, treat that proposal as a starting hypothesis — not a confirmed diagnosis. Always verify with live reproduction before merging any AI-proposed fix.

Gotcha: Community-submitted AI-traced root-cause diagnoses require independent source verification — When a contributor submits a detailed AI-assisted root-cause trace (e.g., "the bug is in function X at line Y, which does Z"), treat it as a starting hypothesis, not a confirmed diagnosis. The contributor may be working from a stale branch or an AI hallucination. Before accepting the diagnosis:

1. Fetch the HEAD source and locate the cited function(s) in the current codebase.
2. Confirm the described behavior actually exists in the current code.
3. Require the contributor to rebase their branch to HEAD before proceeding — their cited line numbers may have shifted and their fix may have merge conflicts that invalidate the analysis. Only after all three checks pass should you treat the AI-traced diagnosis as actionable.

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Quick Reference — Gate Summary

Gate	Blocker level	Where to look	Common miss
First-time CI auth (Step 0b)	Blocking	GitHub Actions tab	Manual workflow approval not triggered
PR type (Gate 0)	Routing gate	PR description + linked issue	Applying feature-addition checklist to a governance/refactor PR
Design fit (Gate 0)	Feature PR primary	Scope, duplication, project intent	Mechanical gates pass but tool is out of scope
Ruff lint (Gate 1A)	Hard block	Output of make lint	Lint violations not run or not fixed
Cross-package imports (Gate 1A)	Potential block	PR diff + pyproject.toml	New import without floor bump skips check-pin-alignment CI
F-string loggers (Gate 1B)	Hard block	*_manager.py	Manager layer even when tool layer is clean; full-payload calls promoted to INFO
No-issue-refs in test strings (Gate 1B)	Hard block	Test docstrings and comment strings in PR diff	#NNN literals in pytest docstrings/parameterize IDs invisible to logger scanner
Pydantic model wiring (Gate 2)	Critical (silent)	unifi-core/models/<domain>.py + tool to_controller_update call	Domain model exists but tool bypasses it with raw dict
Doc site count (Gate 3)	Ordering gate	Doc site entry count	Updated after merge instead of before
Shared pydantic model defaults (Gate 4)	Hard block	<Domain>Base model in unifi-core	Non-None defaults on shared base model fields silently overwrite update-tool fields
API family boundary (Step 1.5)	Hard block	Tool ID types and nested object references	V2 ObjectID and Integration UUID mixed in same tool surface
HA/shadow mode transience (Step 1.5)	Environment issue (not code)	Live smoke test error messages	Blocking merge on HA sync timeouts; retry after stabilization
mergeStateStatus:BLOCKED (Step 4)	Blocking	gh pr view --json mergeStateStatus,reviewDecision	Merging when protection rules block despite mergeable:MERGEABLE
AI-Bot vs human (Step 1.5b)	Precedent gate	Issue tracker + PR scope	Merging bot PRs with parallel in-house work; missing credit for human contributors
Live smoke tests (Step 1.5)	Validation requirement	scripts/live_smoke.py output	Approval without actual live controller tests; mock-only validation
Independent maintainer smoke (Step 1.5)	Non-optional standing rule	Maintainer's own smoke run (not contributor's)	Accepting contributor's smoke results without running independent suite
Plugin invokes published package (Step 1.5)	Coverage gap	MCP plugin tool calls during PR branch validation	Verifying branch-local fix via plugin before publishing; fix appears absent
Enum-hint PRs (Step 1.5)	Coverage gap	Targeted script with explicit enum args	Harness defaults miss all constrained parameter paths
Hardware-gated deferral (Step 1.5)	Deferral gate	Four-condition checklist	Blocking merge on hardware-absent failures without documenting deferral
uiprotect 401 (Step 1.5)	Benign noise	Live smoke Protect bootstrap output	Filing bug or blocking merge on expected startup probe 401
Mutation cycles (Step 1.5)	Field preservation blocker	Create → update → verify → delete cycle	Update tools that reconstruct objects silently zero fields
Cross-platform PRs (Step 1.5)	Validation requirement	Plugin bundle .ps1, stdio auth probe, prereq scripts	Approving Windows-targeting PRs without macOS cross-platform checks
Issue triage (Triage section)	Evidence gate	Raw API payload from reporter	Implementing fixes without confirmed reproduction or raw payload inspection
AI-traced diagnosis (Triage section)	Evidence gate	HEAD source + function verification + rebase check	Accepting community AI-traced root-cause without verifying current codebase state
New-tool registration (Gate 3.5)	Silent failure	make check-generated + serializer and dispatch layer checks	Missing registration layers on tool-adding PRs; stale generated artifacts
Rebase before push (Step 2)	Force-with-lease safety	git fetch origin main && git rebase then --force-with-lease	Using plain --force instead of --force-with-lease; requesting contributor round-trip for a maintainer-side rebase