6 added, 5 removed. Audit A to A.
---
name: condense
- description: 精简技能。对整篇文档剔除**所有**不必要的、以及上下文/全文其他地方已有重复的内容：跨节重复的 claim/数字、零信息增量段落、死定义/死图表、冗长表达。执行 SCIPAPER_STANDARD §5.3（改写、删减、精简，而不是堆叠）：默认方向永远是更短，删除 > 原地压缩 > 等长改写，增长最后且必须有记录理由。每个事实只保留一个 canonical 位置，副本删除或改为交叉引用。保真不变量（§6）全程保护。Use when 用户说 "精简" / "太长了" / "重复" / "废话太多" / "condense" / "trim" / "去冗余"，或 paper-review 维度 I 的冗余 finding 需要执行修复时。
+ description: Whole-document condensation. Removes every passage that is unnecessary or already stated elsewhere: claims and numbers repeated across sections, zero-information paragraphs, dead definitions and uncited figures, verbose constructions. Executes SCIPAPER_STANDARD §5.3 (condense, do not accumulate): the default direction of every edit is shorter — delete > compress in place > same-length rewrite, with growth last and only under a recorded justification. Each fact keeps exactly one canonical home; the copies are deleted or replaced by a cross-reference. Fidelity invariants (§6) are protected throughout, and the mechanical length gate closes the loop. Use when: "condense" / "trim" / "too long" / "repetitive" / "cut the padding" / 精简 / 太长了 / 重复 / 废话太多 / 去冗余, or when a paper-review dimension-I redundancy finding needs to be executed.
disable-model-invocation: false
argument-hint: "<file_path> [--section <name>] [--max-iter N] [--report-only] [--field <name>]"
---
> **Normative authority:** `docs/SCIPAPER_STANDARD.md`. §5.3 (condense, do not
> accumulate) is the policy this skill executes; the policy text lives ONLY in
> the standard — this skill implements it and never restates a competing
> version. §6 rewrite eligibility defines the fidelity invariants every
> deletion and compression must preserve.
# condense — 精简：one canonical home per fact
## 0. What this skill does
A whole-document sweep that removes **all** content which is unnecessary or
already stated elsewhere in the document, then proves the result with the
mechanical length gate. It is the plugin's redundancy/length action surface:
`paper-review` dimension I *detects* redundancy as findings; condense
*executes* the removal. `--report-only` stops after §1: the ranked redundancy
map is returned with no deletion applied.
**Boundary with `/sci-paper:de-ai` (canonical home: de-ai SKILL.md §0;
mirrored here verbatim):**
de-ai removes the *authorship fingerprint* (L0-L4 signals, structural tells,
voice; its Pass-3 length cap only guards its own rewrites against growth).
condense removes *redundancy and length* (cross-document deduplication under
one-canonical-home-per-fact). At the overlap (verbose AI-isms such as
rule-of-three padding or connective stacking), de-ai DETECTS the tell; when
the right fix is deletion rather than rewrite, the deletion EXECUTES under
condense's ranked sweep.
## 0.1 Non-negotiable rules
1. **Preference order: delete > condense-in-place > same-length rewrite.**
Growth is forbidden; the only exceptions are §5.3's own (author-requested
new content, or a source-verified scientific necessity), each with a
recorded justification.
2. **Fidelity invariants (§6).** Every surviving passage preserves claims,
numbers, units, uncertainties, citations, named entities, comparison
direction, negation, causal direction, scope, stance, qualifiers, and
logical dependencies. **Never delete a fact's sole support**: dedup keeps
exactly one canonical home; the copies are deleted or replaced by a
cross-reference — the fact itself never vanishes.
3. **One canonical home per fact.** A number, definition, or claim stated in
two places is a defect with one exception (rule 4). The canonical home is
where the reader needs it — normally the most detailed, first-consumed
occurrence.
4. **Genre carve-out.** The abstract's summary of key results and the
conclusion's restatement of the take-home message are scholarly
convention, NOT duplication. Everything else that has a home elsewhere
goes.
5. **Forward narrative.** Removal never leaves a scar ("as discussed above,
we omit..."); the text reads as if written short from the start.
6. **Deletions are evidence-backed.** A "dead" symbol, figure, table, or
definition is deleted only after a whole-document grep proves nothing
consumes it; the grep evidence goes in the report.
## 1. Measure — build the redundancy map
1. Read the target file completely. Resolve `--field` as in
`/sci-paper:de-ai` §1 (shared style-profile convention).
2. **Snapshot the length baseline** before any edit:
`cp <file> <scratch>/length-baseline.tex` (or record the clean git ref).
Without an honest baseline the closing gate is meaningless.
3. Build the redundancy map, four sweeps:
- **(a) Cross-section duplicates.** Grep every number/macro and scan each
section pair for the same claim, definition, or figure description
stated twice. Record: content, all locations, proposed canonical home.
- **(b) Zero-information-gain text.** Paragraphs or sentences that add no
claim, definition, evidence, qualification, or necessary link —
assurance refrains, restated setup, roadmap prose the structure already
carries.
- **(c) Dead artifacts.** Defined-but-unused symbols, `\label`s never
`\ref`'d, figures/tables never cited, definitions never consumed — each
with the grep output that proves deadness.
- **(d) Verbose constructions.** Multi-sentence spans whose content
survives in fewer words (nominalization chains, redundant qualifiers,
repeated glosses of the same symbol).
4. Rank the map by removable mass (largest duplication first).
## 2. Act — ranked removal
For each map entry, in rank order:
1. **Duplicates (a):** choose the canonical location; delete the copies, or
where the distant reader genuinely needs the pointer, replace with a
cross-reference (`Section~\ref{...}`); re-read both sites in context.
2. **Zero-gain text (b):** delete. If a fragment carries one load-bearing
clause, fold that clause into the neighboring sentence — do not keep the
paragraph for one clause.
3. **Dead artifacts (c):** delete the artifact and every orphaned mention;
re-run the deadness grep afterward to confirm nothing dangles.
4. **Verbose spans (d):** rewrite shorter. Gate every shortened rewrite with
- `python tools/rewrite_reward.py --reference <claim-record> --original
- <span> --candidates ...` — a candidate that drops a protected invariant is
- ineligible regardless of its brevity; among eligible candidates the
- shorter wins.
+ `python tools/rewrite_reward.py --field <field> --reference <claim-record>
+ --original <span> --candidates ...` — a candidate that drops a protected
+ invariant is ineligible regardless of its brevity; among eligible
+ candidates the shorter wins. `--field` is required by the tool (it exits 2
+ without one); resolve it as in §1 step 1.
Apply each change with a minimal Edit and re-read the affected region plus
every cross-reference into it.
## 3. Verify — prove the shrink
1. **Length gate:** `python tools/length_gate.py <file> --before
<scratch>/length-baseline.tex`. Required outcome: exit 0 with a
zero-or-negative net delta for a pure condensation pass. Any
`length-growth:<section>` finding must be dispositioned (condense back, or
record the §5.3 justification) before the pass may close.
2. **No orphans:** rebuild/compile the document if it is LaTeX (0 errors,
0 undefined references, no newly-missing labels); grep every deleted label
and symbol to confirm zero remaining consumers.
3. **Fidelity:** re-check the §6 invariants over every edited span against
the snapshot; every number, citation, and claim in the final text traces
to the same source as before.
## 4. Loop until dry
Repeat §1-§3 over the whole document until **two consecutive full sweeps
find nothing removable**. A single clean sweep is not convergence; simple
counters miss the tail that the first removal round exposes.
## 5. Report
```markdown
# condense — Report
Target: <file> | Baseline: <snapshot/ref> | Sweeps: K (last 2 dry)
Net length delta: <words, per section and total — zero or negative>
## Removed duplicates
- <content> : canonical home <loc>; copies removed <locs>
## Deleted (zero-gain / dead artifacts)
- <item> : deadness evidence <grep summary>
## Compressed spans
- <loc>: <before-words> -> <after-words>; eligibility PASS
## Dispositions
- <any length-growth findings and their recorded justifications>
No number, citation, claim, or sole-support fact was deleted.
```
## 6. Anti-patterns
- Appending an explanation instead of deleting the redundancy (the §5.3
explanatory patch — the exact disease this skill exists to cure).
- Deleting a fact's only occurrence because it "felt repeated" — dedup
requires proving the survivor exists.
- Gutting the abstract or conclusion under the dedup rule (genre carve-out).
- Trimming hedges, uncertainties, or qualifiers to save words — those are
protected invariants, not padding.
- Declaring convergence after one clean sweep.
- Leaving removal scars or drafting-history narration in the text.
- Doing de-ai's job: structural-tell rewriting (voice, templates, L0 words)
belongs to `/sci-paper:de-ai`; condense only deletes and compresses.
## 7. Interfaces
- `docs/SCIPAPER_STANDARD.md` — §5.3 (the policy this skill executes), §6
(fidelity invariants), §0 (consequence classes and dispositions).
- `tools/length_gate.py` — the mechanical closing gate (exit 0/1/2).
- `tools/rewrite_reward.py` — eligibility + condensation ranking for
shortened rewrites.
- `/sci-paper:paper-review` — dimension I findings are this skill's input
queue.
- `/sci-paper:de-ai` — the authorship-fingerprint surface (boundary in §0).