# REGENERATED.md — examples/02-real-cli

| Field | Value |
|-------|-------|
| Calibrated against | trekplan v3.4.1 |
| Last regenerated | 2026-05-04 (B3 session) |
| Source brief author | Hand-authored by operator (B1 session, 2026-05-04) |
| Baseline author | B2 session, 2026-05-04 (commit `c8146c1`) |
| Pipeline run | B3 session, 2026-05-04 (commits `c4cf49f` → `da68c2f`) |

## What this example demonstrates

`examples/02-real-cli/` is the first **runnable** trekplan example.
Unlike `examples/01-add-verbose-flag/` (which ships a frozen brief, plan,
and research as artifacts but no executable code), this example ships a
working ~80-line Node.js CLI (`tally`), a passing test suite, and known
fixture data — all designed to be the input for a real pipeline run.

The fixture's purpose is twofold:

1. **End-to-end pipeline validation:** running `/trekresearch`,
   `/trekplan`, and `/trekexecute` against `brief.md` must
   produce green commits that satisfy all 10 brief Success Criteria. This
   is the controlled environment used to verify pipeline correctness on
   release-validation passes (see "Regeneration triggers" below).

2. **Cache-prefix measurement target (Spor C, planned):** the next track
   in the post-v3.4.0 roadmap will use this fixture under
   `CLAUDE_CODE_FORK_SUBAGENT` to measure cache-prefix preservation
   semantics. The fixture is small enough to fit comfortably under the
   150-250K context window where Path C measurements need to happen.

The brief deliberately picks a small, well-scoped feature (single boolean
flag with regex semantics) so the pipeline output is predictable and
testable, while still exercising the full plan/execute machinery
(manifest YAML, plan-critic, scope-guardian, per-step verify, progress.json).

## Baseline (delivered by B2, 2026-05-04, commit `c8146c1`)

`tally` — an 80-line zero-dep Node.js CLI that counts literal-substring
occurrences of a pattern in a text file. Three flags (`--json`,
`-i`/`--ignore-case`, `--lines`), `--help`, exit codes 0/1/2.

Layout:

```
examples/02-real-cli/
├── tally.mjs                  # CLI (80 lines, hand-rolled argv parser)
├── tests/tally.test.mjs       # 10 node:test cases (all pass ~2.2s)
├── fixtures/
│   ├── sample.txt             # 9 lines, known counts (foo×7, Foo×1, /fo+/g×9, .×4)
│   ├── poem.txt               # 5 lines, "foo" --lines = 3, total = 4
└── REGENERATED.md             # this file
```

Baseline preconditions verified by B2:

- `grep -c 'foo' fixtures/sample.txt` returns 4 lines containing `foo`
  (literal `foo` count = 7 across those lines).
- regex `/fo+/g` matchAll on `sample.txt` = 9 (greater than literal `foo`
  count, as required by brief SC #1).
- `--lines foo poem.txt` = 3, total `foo` in `poem.txt` = 4 (exercises
  `--lines` distinction in baseline tests).

## Pipeline run (delivered by B3, 2026-05-04)

The pipeline ran against `brief.md` (research_topics: 0, hand-authored).
Each phase produced an artifact in
`.claude/projects/2026-05-04-examples-02-real-cli/`.

### `/trekresearch`

**Outcome: skipped (intentionally).**

Brief declares `research_topics: 0` and `research_status: complete`.
The brief's "Research Plan" section is explicit:

> No external research needed — this is a pure Node.js stdlib + `node:test`
> task, the codebase fixture is self-contained, and the regex semantics
> needed (`new RegExp(p)` + `String.prototype.matchAll`) are well-documented
> MDN material.

Following the prompt's guidance ("Ikke kjør Gemini-bridge eller
community-researcher for trivielle Node-stdlib-spørsmål"), the swarm was
not invoked. No research file was written; `research/` directory does not
exist for this project. Downstream commands (`/trekplan`) auto-discover
research files but do not require them — the missing directory is fine
per the soft-mode `research-validator` contract.

### `/trekplan`

**Outcome: plan.md with 4 steps; plan-validator strict PASS;
plan-critic 0 BLOCKER (4 MAJOR fixed in revision); scope-guardian
PASS — ALIGNED.**

`plan.md` headers:

```
# Add `--regex`/`-r` mode to the `tally` CLI fixture
plan_version: 1.7

## Context
## Codebase Analysis
## Research Sources
## Implementation Plan
### Step 1: Add `--regex`/`-r` parsing and `compileRegex` helper
### Step 2: Wire regex counting path in `main()`
### Step 3: Update `--help` text to document `--regex`/`-r`
### Step 4: Add 4 new tests covering the regex path
## Verification
## Plan-critic notes
## Scope-guardian notes
## Execution Strategy
```

Adversarial-review summary:

| Reviewer | Verdict | Findings |
|----------|---------|----------|
| `plan-critic` | REVISE → re-run after fixes | 0 BLOCKER, 4 MAJOR (non-assertive verify in step 1; unchained verify in step 2; SC #9 final-block mismatch; `compileRegex` 'g' flag rationale missing). All 4 fixed. |
| `scope-guardian` | PASS — ALIGNED | 0 creep, 0 material gaps. Every brief SC and Non-Goal mapped to a step or manifest constraint. |

Manifest YAML on every step uses `forbidden_paths: examples/02-real-cli/package.json`
to enforce the brief's "no package.json" Non-Goal. `must_contain` patterns
require named symbols (`flags.regex`, `compileRegex`, `--regex 'fo+'`,
`-r short form`, `invalid regex`) so the verifier confirms substantive
changes, not just file modifications.

### `/trekexecute`

**Outcome: 4 commits, all green, all `verify_passed: true`.**

`progress.json` summary:

```json
{
  "schema_version": "1",
  "plan_version": "1.7",
  "mode": "single-session",
  "status": "completed",
  "total_steps": 4,
  "current_step": 4
}
```

Step-by-step:

| Step | Commit | Title | Verify |
|------|--------|-------|--------|
| 1 | `c4cf49f` | feat(tally): parse --regex/-r flag and add compileRegex helper | flag parsed, literal count = 7 |
| 2 | `44d7f33` | feat(tally): wire regex counting path in main with invalid-regex exit-2 | OK1, OK2, OK3, OK4 (4 chained assertions) |
| 3 | `c6ff4fa` | docs(tally): document --regex / -r in --help text | `--help \| grep -c -- "--regex"` = 1 |
| 4 | `da68c2f` | test(tally): add 4 tests for --regex/-r path covering SC #1, #2, #4, #5 | tests 14, pass 14, fail 0, duration_ms 3162.74 |

Constraint compliance:

- `tally.mjs`: 93 lines (under 100-line cap, +13 from 80-line baseline)
- `tests/tally.test.mjs`: 14 tests (exactly at 14-test cap, +4 from 10-test baseline)
- Test wall-clock: 3.16 s (under 5 s cap)
- `package.json`: not created (Non-Goal enforced)
- Files outside `examples/02-real-cli/`: zero
- Hook safety: zero shutdown/halt/reboot/poweroff/mkfs words in commit
  bodies or verify commands

### Success Criteria status (10/10 PASS)

| SC | Verifier | Result |
|----|----------|--------|
| #1 | flag in 3 positions, all exit 0, same count | PASS (all = 9) |
| #2 | `-r 'fo+' sample.txt` == long form | PASS (both = 9) |
| #3 | `tally '.' sample.txt` (= 4) << `tally --regex '.' sample.txt` (= 209) | PASS |
| #4 | `tally --regex '[' sample.txt` exits 2, stderr `^tally: invalid regex` | PASS |
| #5 | `--json --regex 'fo+'` includes `flags.regex: true` | PASS |
| #6 | `tally 'foo' sample.txt` = 7 (= B2 baseline) | PASS |
| #7 | tests ≥ 12, ≥ 2 names contain `--regex` or `-r` | PASS (14 tests, 4 named) |
| #8 | `tally --help` contains `--regex` line | PASS |
| #9 | `REGENERATED.md` walk-through filled in | PASS (this file) |
| #10 | no `package.json` created | PASS |

## How to re-run this example

```bash
cd /path/to/trekplan

# 1. Re-run the pipeline against the existing brief
# (research is skipped — research_topics: 0)
/trekplan --project .claude/projects/2026-05-04-examples-02-real-cli
/trekexecute --project .claude/projects/2026-05-04-examples-02-real-cli

# 2. Verify all 10 Success Criteria from brief.md hold (commands above)
node --test examples/02-real-cli/tests/tally.test.mjs       # 14 pass

# 3. Smoke-test individual SC commands:
node examples/02-real-cli/tally.mjs --regex 'fo+' examples/02-real-cli/fixtures/sample.txt
# expected: 9
node examples/02-real-cli/tally.mjs -r 'fo+' examples/02-real-cli/fixtures/sample.txt
# expected: 9
node examples/02-real-cli/tally.mjs --json --regex 'fo+' examples/02-real-cli/fixtures/sample.txt | python3 -m json.tool
# expected: {"pattern": "fo+", "count": 9, "flags": {..., "regex": true}}
node examples/02-real-cli/tally.mjs --help | grep -- "--regex"
# expected: "  -r, --regex        Interpret <pattern> as a JavaScript regular expression"
```

If any of those expected values changes, the pipeline output has drifted
and `examples/02-real-cli/` should be re-baselined (see "Regeneration
triggers" below).

## Regeneration triggers

When to re-run this example:

- trekplan minor version bump (e.g. v3.4 → v3.5)
- `plan_version` schema bump
- Manifest YAML required-key additions
- `progress.json` schema bump
- Pipeline-output format change (brief / research / plan / progress)

When regenerating: re-run the pipeline against the existing `brief.md` and
update this file plus the `examples/02-real-cli/` artifacts. The
"baseline" portion of the fixture (`tally.mjs` minus the regex feature,
the fixture text files, and the original 10 baseline tests) stays stable
across regenerations — only the pipeline outputs and any drift in the
extended `tally.mjs` change. If you want a clean re-run, reset to commit
`c8146c1` (B2 baseline) before invoking the pipeline.
