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feat: mode words on the slash surface, and an omitted --base that declares itself - #40
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The way this tool is actually used is a slash command, and the entry tree that decides what to run was prose: workable for a model, unusable as something to type. Six modes now map a word to a stage and a first command — pr, graph, repo, claim, gate, help — the last one a card that runs nothing and changes no state. The table lives in the skill and the host files point at it rather than copying CLI usage, which is what they had been doing: `.claude`, `.cursor` and `.github/prompts` each carried their own line for `euthyna audit --base`, and OpenCode forwarded its arguments straight to the CLI — where a mode word is not a subcommand on purpose, so `/euthyna graph` would have reached `euthyna graph` and failed as an unknown command. The mirror guard already covers this without a new checker: a seventh row added to the Chinese half alone turns `skill-mirror` red on the table shape. Measured, not assumed.
A slash command with no arguments needs a range, and the dangerous way to give it one is silently: a narrower range deletes edges and reads as cleaner. So the inference is stated where the range is stated — （推断…） on the range line, a range-inferred entry in notEvaluated, its code on the JSON channel — following the shape manifest-not-head already uses. merge-base(HEAD, origin/main), then origin/HEAD; if neither resolves the run stops with a usage error naming both refs, because guessing HEAD~1 would exit like a completed audit. history and audit share one resolveRangeBase helper rather than each growing a version of "what a missing --base means" — the two halves of audit were already the cautionary tale for that. Two existing tests were rewritten because their premise moved: "a missing --base is a usage error" is now true only when nothing resolves, so those cases assert the still-true contract (an unresolvable --base) and the fail-closed branch is covered by its own case against a repository with no remote-tracking branch. Verified by mutation: removing either declaration, the range-line marker, or the reason's ref names turns the suite red — four mutations, four caught.
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| Check name | Status | Explanation | Resolution |
|---|---|---|---|
| Docstring Coverage |  |
Docstring coverage is 70.00% which is insufficient. The required threshold is 80.00%. Docstring coverage is scoped to functions touched by this diff. Analyzed 10 functions across 4 files. (11 skipped:… | Write docstrings for the functions missing them to satisfy the coverage threshold. |
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Check name Status Explanation Description Check Check skipped - CodeRabbit’s high-level summary is enabled. Title check The title clearly summarizes both primary changes: slash-command mode words and self-declaring omitted --base inference. It is specific and directly related to the changeset. Linked Issues check Check skipped because no linked issues were found for this pull request. Out of Scope Changes check Check skipped because no linked issues were found for this pull request.
Full details: Docstring Coverage
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Explanation
Docstring coverage is 70.00% which is insufficient. The required threshold is 80.00%. Docstring coverage is scoped to functions touched by this diff. Analyzed 10 functions across 4 files. (11 skipped: 11 unsupported.)
Resolution
Write docstrings for the functions missing them to satisfy the coverage threshold.
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Actionable comments posted: 9
- 🪄 Fix comments: Fix CodeRabbit comments on this PR
🤖 Prompt to fix review comments
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Inline comments:
Review comments at @.agents/skills/euthyna-en/SKILL.md:
- Line 114: Update the Stage B row in the command mapping table for /euthyna pr
to use the executable omitted-base command euthyna audit instead of the
undefined --base <fork point> form.
Review comments at @.agents/skills/euthyna/SKILL.md:
- Line 102: Update the `/euthyna pr` row in the workflow table to invoke
`euthyna audit` without the unresolved `--base <分叉点>` placeholder, relying on
the CLI’s automatic base inference.
Review comments at @.claude/commands/euthyna.md:
- Line 14: Update the entry decision flow in the mode-handling section so
matched mode words execute their SKILL.md-mapped first command and do not
continue into the generic audit flow; make the help mode return immediately
without running commands or changing state, while preserving normal audit
processing only for unmatched modes.
Review comments at @.cursor/commands/euthyna.md:
- Line 8: Update the entry decision flow so the mode-word mappings from
SKILL.md, including repo, claim, gate, and help, take precedence and determine
the first command or no command; invoke the generic euthyna audit command only
when no mode word matches.
Review comments at @.github/prompts/euthyna.prompt.md:
- Line 10: 更新入口决策树，先依据 SKILL.md 的模式词映射阶段和首条命令；仅在未匹配任何模式词时才运行通用 euthyna audit
命令，确保 /euthyna repo、claim、gate 和 help 按各自映射执行或跳过命令。
Review comments at @.opencode/commands/euthyna.md:
- Around line 4-6: Update the euthyna command dispatch so the npx fallback
reuses the mapped command produced by the mode-word translation instead of the
original $ARGUMENTS; preserve direct argument passthrough for unmapped inputs,
and ensure the help path displays help without executing any command.
Review comments at @docs/ci-integration.md:
- Line 16: Update the sentence describing github.base_ref in both language
documents to identify it as the pull request’s target branch rather than an
authoritative fork point, and state that git merge-base is required when the
actual common ancestor is needed. Preserve the distinction between measured,
inferred, and assumed values.
Review comments at @src/cli.js:
- Line 466: Update the flow around mergeBase(cwd, ref) to resolve the selected
--head commit first, then pass that resolved commit to mergeBase instead of
implicitly using the current HEAD. Preserve the existing range calculation while
ensuring the base corresponds to the requested head.
Review comments at @src/git.js:
- Line 90: Update the SHA validation near the return expression to accept both
40-character SHA-1 and 64-character SHA-256 hexadecimal object IDs, while
continuing to reject other formats.
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⚙️ Run configuration
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30946805-b0f5-4079-a480-040a04a94f94
📒 Files selected for processing: 15
.agents/skills/euthyna-en/SKILL.md.agents/skills/euthyna-en/references/fact-producers.md.agents/skills/euthyna/SKILL.md.agents/skills/euthyna/references/fact-producers.md.claude/commands/euthyna.md.cursor/commands/euthyna.md.github/prompts/euthyna.prompt.md.opencode/commands/euthyna.mdAGENTS.mddocs/ci-integration-zh.mddocs/ci-integration.mdsrc/cli.jssrc/contract.jssrc/git.jstest/cli.test.js
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…by two changes `--graph` shipped in 0.9-era main with README never mentioning it, and this branch made `--base` omissible while both skill editions still said it was the only required argument. Nothing turned red for either: the pairing guards compare the two language halves of a file with each other, so a statement that is stale on both sides is consistent and passes. Adds the channel that was missing: every flag `euthyna help` advertises must be explained somewhere in README, CONTRIBUTING, docs/ or the skill references. Proved by mutation, twice over — renaming `--graph` out of every file at once turns it red with the flag named; the earlier version of the check passed while README alone was missing it, which is its actual limit: it catches a flag documented nowhere, not a prose surface that lags. The second class is a sweeping job, and this commit is the sweep it forced.
…der from the pr row The review was right on both counts. The clause I added said "map the mode, then continue" while the following steps still told every request to run `euthyna audit --base …` and write a report — so `/euthyna help` in Cursor would have run an audit, and `repo` / `claim` / `gate` were annotated rather than honoured. Modes now override all the later steps: run the mapped command and close out, `help` prints the table and runs nothing, and the general flow is what happens when no mode matches. The `pr` row also kept `--base <分叉点>` from before this branch made the flag optional, which left a placeholder an agent cannot execute in the one row that the inference exists for. It maps to `euthyna audit` now, with the omission stated as the normal path; `graph` says the same.
…cept sha256 ids Both findings reproduced before being fixed. `merge-base` ran against the checked-out HEAD, so `--head v1.2.3` with no `--base` measured a range whose start was chosen for a different commit — it can pull in unrelated deletions or drop the ones under review. `--head` is now resolved first and passed into the inference. The ordering moved one existing test: an empty repository now stops at the unresolvable `--head` before the hostile `--base` is ever read, so that case gives the repository a commit; what it pins is the stderr boundary, not which flag fails first. The 40-hex guard on the merge-base result rejected a sha256 repository's real fork point, which surfaced as "neither origin/main nor origin/HEAD resolves" — a fail-closed message that was simply wrong. Measured on a repository created with `git init --object-format=sha256`: the assertion failed with a 64-character id before the fix and passes after. Also from the review: OpenCode's `npx` fallback re-ran the raw arguments, so a mode word reached the CLI as `euthyna repo`; and the CI note called `github.base_ref` the authoritative fork point when it names the pull request's target branch, whose tip need not be where the branch diverged. Both corrected, the second in each language.
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Summary
pr,graph,repo,claim,gate,help. They map the entry tree the skill already had (stages A/B/C) onto something a person can type;helpprints the table and runs nothing.euthyna graphwould have to enter the dispatch list, the bilingual help, both skill editions and four documents, andeuthyna audit --graphalready does the job. The mode words are a front-door concern..claude,.cursorand.github/promptseach carried their own line foreuthyna audit --base, and OpenCode forwarded its arguments straight to the CLI — which is where a mode word is not a subcommand, so/euthyna graphwould have died as未知命令: graph. All four now point at the table in the skill instead of restating it.--basemay be omitted, and the inferred range is declared three times:（推断…）on the range line, arange-inferredentry innotEvaluated, and itscodeon the JSON channel — the shapemanifest-not-headalready uses. The rule ismerge-base(HEAD, origin/main), thenorigin/HEAD; when neither resolves the run stops with a usage error naming both refs, because a guessedHEAD~1would exit like a completed audit and read as a smaller, cleaner history.historyandauditshare oneresolveRangeBase, so the two halves cannot disagree about what a missing--basemeans.8d02703is a docs sweep, and it was needed.--graphshipped with README never mentioning it, and both skill editions still said--basewas "the only required argument" after this branch made it omissible. Nothing turned red, because the pairing guards compare each file's two language halves with each other — stale on both sides is consistent. So there is now a channel: every flageuthyna helpadvertises must be explained somewhere in README,CONTRIBUTING.md,docs/or the skill references.Test plan
node --teston this branch: 322 tests, 321 pass, 0 fail, 1 skip (the existing bsdtar-keyed skip)origin(git cloneinto a temp dir), not a mocked one: the inferred base equalsmerge-base, the terminal line carries the marker, the JSON channel carries the code, andauditdoes the same through its own call siteUSAGE, its error namesorigin/main, and nothing is printed as measuredskill-mirrorred on the table shape;--graphrenamed out of every documented file → the new flag guard red naming the flageuthyna history --repo <clone>with no--baseprints the inferred range line, therange-inferredcaveat, and the same declaration as a dashed node in--graphoutputdocs-pair,skill-mirror,i18n,plugin/claude-plugin/hermes-plugin/manifest-versionall green after the mirrored editsWhat the new guard does not cover
It catches a flag documented nowhere. It does not catch a prose surface that lags while another file documents the flag — that is what let README slip twice, and no cheap check replaces sweeping the documents a change invalidates.
Two existing tests rewritten, not deleted
Both said "a missing
--baseis a usage error" — the premise moved, so they now assert the part that is still true (an unresolvable--base), and the genuinely new contract (missing and nothing to infer from) is covered by its own case.Not in this PR
graph/prsubcommand, and any interactive prompt (a CLI that asks questions hangs a CI job).gate: both are ambiguous guesses that would need the same declaration treatment, and neither is what made typing painful.