Start — Opt-in Activation, Re-enable, and Task Intake

Read the marker state first. The path taken depends entirely on which marker files exist.

Marker state dispatch

State	Condition	Path
Fresh install	.claude/sdlc/.enabled absent AND .claude/sdlc/.suspended absent	Activate → Steps 0–4
Suspended	.claude/sdlc/.suspended present	Re-enable → Steps R1–R5
Already enabled	.claude/sdlc/.enabled present	Hand off to /plan

Check .claude/sdlc/.suspended first. If present, go to the re-enable path even if .enabled also somehow exists — .suspended wins.

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PATH A — Fresh Install (Steps 0–4)

Step 0 — Config check and auto-detection

Skip this step entirely if config/tools.json already exists.

Run the following detections silently — no prompts, just observe:

Signal	Detected value
.git directory	vcs: "git"
git remote get-url origin	repo slug (owner/repo)
.github/workflows present	ci: "github-actions"
.gitlab-ci.yml present	ci: "gitlab-ci"
.circleci/config.yml present	ci: "circleci"
Jenkinsfile present	ci: "jenkins"
package.json present	language: "node"
pyproject.toml or requirements.txt	language: "python"
go.mod present	language: "go"
Cargo.toml present	language: "rust"
pom.xml or build.gradle	language: "java"
jest or vitest in devDependencies	test.command
pytest in pyproject.toml	test.command
eslint in devDependencies	lint.command
ruff in pyproject.toml	lint.command
Remote URL contains github.com	tracker: "github"
Remote URL contains gitlab	tracker: "gitlab"
Remote URL contains bitbucket	tracker: "bitbucket"

Show detected values as facts, not questions. Then ask up to three prompts:

Prompt 1 — Tracker confirm (always shown, pre-selected if detected):

Issue tracker (inferred: GitHub Issues) — correct? [Y/n/override]

If remote is absent or ambiguous:

Which issue tracker does this project use?
A) GitHub Issues  B) GitLab  C) Jira  D) Linear  E) None
(detected: none) _

Prompt 2 — Auth token (only if tracker ≠ None):

Paste your <tracker> token (stored in config/tools.local.json, never committed).
Skip with Enter to omit: _

Prompt 3 — Project slug (only if tracker detected but slug not parseable from remote):

Project key or repo slug: _

Best case (GitHub/GitLab remote present): 1 prompt (token only). Typical case (no remote): 3 prompts maximum. Multi-team sign-off configuration: not surfaced here — deferred to /configure.

After prompts, show a diff of the proposed config/tools.json and config/tools.local.json. Write only on explicit confirmation. If the user declines, proceed to Step 1 without writing config — they can run /configure later.

Step 1 — Create .enabled marker

mkdir -p .claude/sdlc
touch .claude/sdlc/.enabled

Hooks are now armed. This runs immediately after config is confirmed (or skipped).

Step 2 — Task intake

Single prompt:

What are you building or fixing — one sentence.
> _

Auto-classify task type from keywords in the response:

Keywords	Classification
add / build / create / implement / new	new-build
fix / bug / broken / patch / correct	fix
change / update / migrate / refactor / modify	change-request
ambiguous	Ask: "Is this a new feature, a bug fix, or a change to existing behavior? (feature/fix/change)"

Fix-fast eligibility check — offer routing to /fix-fast only when all five hold:

• Classification is fix
• Description implies no UI/UX changes
• Description implies no API or schema changes
• File count implied: ≤ 2
• Size implied: tiny (≤ 50 lines)

If eligible, ask:

This looks like it may qualify for /fix-fast — a compressed path that skips Analyze and Design.
Eligibility: fix only, ≤ 2 files, ≤ 50 LOC, no API/schema changes, no UI changes.
Route to /fix-fast? [Y/n — if unsure, choose n and use the full flow]

If yes: tell the user to run /fix-fast with their description. Stop. Do not invoke fix-fast yourself.

Step 3 — Auto-generate artifacts

scope.md — if .claude/sdlc/scope.md does not exist, create it from the description:

# Scope: <repo-slug or "this project">

## Summary
<one-sentence description from Step 2>

## In scope
- <heuristic: primary files or directories implied by description>

## Out of scope
- Anything not mentioned above
- Test infrastructure changes beyond what the task requires
- Documentation unless explicitly part of the task

**Status:** draft — review and confirm in /plan before treating as authoritative

Plan artifact — create .claude/sdlc/plans/<slug>.md using templates/plan.md with these fields pre-filled:

Field	Source
REQ-ID	REQ-001 (or next available REQ-N by scanning existing plan files)
Classification	auto-classified from Step 2
Stack	detected in Step 0
In-scope files	heuristic from description keywords — mark as [suggested]
In-scope functions	TBD — refine in /plan
Out-of-scope	standard safety list
Estimate	keyword-based: "add/build/create" → medium; "fix" → small; "change" → medium
Status	draft

All auto-generated fields are marked [suggested] or [draft] — they require human confirmation in /plan before they are authoritative.

Step 4 — "What this armed" summary

Print the activation summary, then display the plan inline:

[SDLC] Workflow enabled.

  Repo:    github.com/owner/my-app     (or: no remote detected)
  CI:      github-actions              (or: none detected)
  Stack:   python / pytest / ruff      (or: not detected)
  Tracker: GitHub Issues → owner/my-app

  config/tools.json              → written           (or: skipped — run /configure to set up)
  .claude/sdlc/scope.md          → created  [draft — review in /plan]
  .claude/sdlc/plans/<slug>.md   → REQ-001  [draft — review in /plan]
    classification: <type>                   [suggested]
    estimate:       <size>                   [suggested]
    in-scope files: <n> heuristic matches    [suggested — confirm in /plan]

Hooks now active:
  ✓ plan-gate        — blocks edits without a signed plan
  ✓ secret-scan      — catches credentials before they're written (always-on)
  ✓ diff-scope-check — warns if edits drift outside scope
  ✓ bash-safety      — flags destructive shell commands

Next: review the plan below, then run /plan to sign it.
All [draft] and [suggested] fields require your confirmation in /plan before they are authoritative.

Display the plan artifact inline. Hand off to /plan for review and sign-off. Do not invoke /plan yourself — print the hand-off message and stop.

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PATH B — Re-enable After Suspension (Steps R1–R5)

This path runs when .claude/sdlc/.suspended exists. Skip the config wizard entirely — config already exists.

Step R1 — Run snapshot verification

Call hooks/suspend-snapshot.sh verify. The script outputs plan-keyed JSON to stdout.

If the script outputs {"error": "no_snapshot", ...}: inform the user:

[SDLC] Snapshot file not found. Cannot verify governance integrity.
Re-enabling without tamper detection. Enforcement will be active but no reconciliation is possible.
Continue? [Y/n]

If yes: skip to Step R5 (re-enable directly). If no: stop.

If the script outputs {"error": "decryption_failed_refused"} or {"error": "key_expired_refused"} or {"error": "key_missing_refused"}: the user already declined degraded mode inside the script. Print:

[SDLC] Re-enable cancelled. Workflow remains suspended.

Stop.

Step R2 — Parse verify output

The JSON has this shape (from suspend-snapshot.sh verify):

{
  "plans": {
    "REQ-001": {
      "changed_files": [...],
      "severity": "HIGH",
      "revert_candidates": [...]
    }
  },
  "clean_plan_count": 2,
  "degraded": false,
  "cap_warning": null
}

Scope overflow cap warning: if cap_warning is non-null, display it before showing any plan output:

[SDLC] WARNING: <cap_warning text>
Active plans exceeding the cap are not marked safe — they are deferred. Run /status after re-enable to review them.

Count changed plans (K = keys in plans where changed_files is non-empty).

• K = 0 → no governance changes → skip to Step R4 (clean path)
• K ≥ 1 → changed plans present → Step R3

Step R3 — Per-plan reconciliation prompts

For each changed plan in plans (ordered by severity: HIGH first, then LOW), show:

━━ REQ-001  <slug>  [HIGH] ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━

  Files modified during suspension:
    .claude/sdlc/gates/build-<slug>.md
    .claude/sdlc/sign-offs/REQ-001-qa.md
    src/auth/login.py

  Re-examining requirements...

Load the changed files for this plan (from changed_files), plus their one-hop artifact neighbors per RFC §7.3 rules, restricted to this plan's active artifacts. Produce a plain-language summary — no gate-file notation, no jargon.

Then show:

  Changes summary:
    • Build gate: QA sign-off was removed
    • src/auth/login.py: expanded from 120 → 190 lines
      (outside original REQ-001 scope of 3 files)
    • No schema or API changes detected

  Accept changes to REQ-001? [Y/n]

For plans with severity LOW (source drift only, no governance artifacts changed):

━━ REQ-003  <slug>  [LOW] ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━

  Files modified during suspension (source drift only):
    src/ui/search.py

  Changes summary:
    • src/ui/search.py: 8-line addition within REQ-003 scope

  Accept changes to REQ-003? [Y/n]

If the user enters n on any plan: collect all rejected REQ-IDs. After all prompts complete, print:

  <REQ-ID> rejected. Workflow stays suspended.

  Revert these files and run /start to try again:
    <revert_candidates for each rejected plan>

.suspended marker remains. Snapshot is preserved. Stop.

If the clean plan count is non-zero, append after all per-plan prompts:

<N> plan(s) verified clean: <REQ-IDs>

For accepted HIGH-severity plans — propose REQ supersession (do not write the new plan file yet):

  Proposed: supersede REQ-001 → REQ-002.

  REQ-001 remains active. REQ-002 has not been written.

  To confirm:
    1. Run /plan — Claude will draft REQ-002 for your review.
    2. Sign REQ-002 in /plan as you would any new plan.
    3. REQ-001 is marked superseded only after REQ-002 is signed.

For accepted LOW-severity plans: no supersession proposed. Drift is surfaced in /status.

Step R4 — Clean path (K = 0)

[SDLC] Resuming after suspension — no governance changes detected.

  Source files modified during suspension: <N>  [below escalation threshold]
  ⚠ Suspension drift pending review — run /status to see affected files.

  Workflow re-enabled.

(Omit the drift line if source changes are also zero.)

Snapshot is deleted: rm .claude/sdlc/.suspension-snapshot.enc

Step R5 — Re-enable

mv .claude/sdlc/.suspended .claude/sdlc/.enabled

If snapshot still exists (governance changes accepted, supersession pending): leave it until REQ supersession is signed. Do not delete it here.

Print:

[SDLC] Workflow re-enabled. Enforcement is active.
plan-gate will require a signed plan before editing — sign the superseding REQ in /plan.

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PATH C — Already Enabled

If .claude/sdlc/.enabled exists and .claude/sdlc/.suspended is absent:

[SDLC] Workflow is already enabled.
Run /plan to start a new task or continue an existing one.

Hand off to /plan if the user also provided a task description. Otherwise stop.

---

What this skill must NOT do

• Do not write plan artifacts in re-enable path — only propose supersession. /plan owns the plan file.
• Do not auto-run /plan after activation — print the hand-off message and let the user run it.
• Do not mark REQ-001 as superseded before the human signs REQ-002 in /plan.
• Do not delete the snapshot until: (a) clean path (K=0), or (b) all supersession sign-offs are confirmed.
• Do not skip the re-enable path even if the config wizard hasn't been run.

Graceful degradation

• hooks/suspend-snapshot.sh not found → surface the error; offer to re-enable without integrity verification (Step R1 no-snapshot path).
• config/tools.json absent on fresh install → proceed without config; show "not configured" in the armed summary; prompt to run /configure to finish setup.
• .claude/sdlc/plans/ absent → treat as no active plans; skip plan artifact creation in Step 3 for re-enable; still create scope.md and plan in fresh install.

References

• hooks/suspend-snapshot.sh — verify mode called in Step R1
• skills/plan/SKILL.md — receives pre-fill context after Step 4 or after REQ supersession proposal
• commands/fix-fast.md — fix-fast eligibility rules
• docs/rfcs/opt-in-activation-suspend-resume.md §5 (fresh install) and §7 (re-enable)