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reverse-engineering-anything/docs/specs/agent-environments/prefix-variance/verification.md
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Edgar ArakelyanandClaude Opus 5.5 ea3534759f feat(analysis-view): share templated positions across manifest tools (#5664)
* docs(specs): plan a template rule that shares templated positions

Record the outcome, requirements, non-goals, plan and tasks for
prefix-variance, an opt-in environment-manifest rule that templates a
literal segment with the parameter another tool already uses at that
position, so a session's writes to one entity share the read's template.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

* feat(analysis-view): share templated positions across manifest tools

Add the opt-in prefix-variance template rule. It runs after the other
opt-in rules and templates a literal at a position that another tool,
of any method or segment count, templates by one of those rules after
the same preceding parts, when the literal is one of that parameter's
observed values or carries a digit and is spelled like one. The
parameter takes the shared parameter's name, tools that now match merge,
and a merged position keeps a tool's own rule when one templated it.

A write to the one entity a session edited, such as
PATCH /api/v1/collections/0RZ576QZQA5KG, becomes
patch_collections_by_collection_id on the read's template instead of a
literal single-entity tool.

Tool naming moves to its own module, and the three comparing passes
share the 32-segment split. Manifests that do not list the rule are
unchanged.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

* refactor(analysis-view): drop the unused ManifestRule alias

Parameters now type their rule as a format rule, a shared opt-in rule
or prefix-variance, so nothing reads the union alias.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

* docs(specs): record the prefix-variance checks and corpus results

Record the gates, and the 50 showcase captures with and without the
rule: identical output without it, 25 write and 34 read tools templated
with it, and the write tools the write-plan branch serves on top.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

* fix(analysis-view): share positions with digit-free generated identifiers

prefix-variance accepted an unobserved literal only when it carried a
digit, so a generated identifier that happened to hold none stayed a
literal tool: an n8n workflow id such as FkMwxmXNGaGVsXFG, whose reads
then never joined the item view. A literal now also qualifies when every
value observed at the position has one length of eight or more characters
and the literal has that length and uses only their character classes.

Across the 50 showcase captures this templates 10 more read tools in
Memos and n8n and no words.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

* docs(specs): record five environments rebuilt end to end with the rule

Five randomly drawn environments rebuilt on VMs with the rule and the
write-plan branch: smoke, retrieval and write tasks for two models, and
the same calls against the live applications. Record the results, the
misses and their causes, and the corpus numbers after the fixed-length
clause.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

* fix(analysis-view): share a position with the parameter that observed the literal

A shared position folded every donor's values into the earliest donor's
parameter. With an opaque-token read before sibling-variance reads at
the same position, a PATCH of /api/items/b2 qualified on the sibling's
evidence but became /api/items/{uid} instead of joining the item read's
/api/items/{item_id}. Each position now keeps one donor per naming rule
with its own values, and a literal takes the donor that observed it,
else the earliest one it is spelled like.

Each donor's spelling (length and character classes of its values, and
its fixed-length family) is summarised once per position, so a literal
is checked in time independent of how many values were observed, rather
than copying and rescanning them for every candidate.

A family now forms from one observed value, as the requirement says, so
a digit-free id of the same length shares a position that only one
opaque-token or after-uid-literal tool supplied. The 50 showcase
captures give the same tools as before.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

* docs(specs): record the prefix-variance review round

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

* fix(analysis-view): bound the spelling summary of shared positions

spellingSummary classified every observed value with three full-size
replaceAll copies and a set per distinct character, so a donor holding
a multi-megabyte segment cost unaccounted memory and time in finish().
Characters are now classified in one pass, and a value longer than 128
characters takes no part in spelling comparisons: it shares a position
only as an exactly observed value. The 50 showcase captures give the
same tools.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

---------

Co-authored-by: Claude Opus 5.5 <noreply@anthropic.com>
2026-10-21 18:11:51 +08:00

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# Verification
Verified base: 33b0643e on main 1629266e (the rule, the alias removal `knip`
asked for, and the fixed-length clause the end-to-end runs below led to). Executed on macOS with Node v22.23.1 (the repository pins
24.18.0 in `.nvmrc`, which was not installed).
## Gates
- `npm run build:cached`, `npm run check:fast` (typecheck and lint),
`npm run format:check`, `npx knip`, `npm run scan:todos`,
`npm run docs:check`, `npm run verify:test-discovery` and
`npm run mcp-catalog:check`: passed.
- `npm run jscpd`: 3.49% duplicated lines over 3561 files with 3067 clones;
main measures 3.49% with 3068, since the shared segment-limit split removes
one clone.
- oxlint reports no new finding on the changed files. The manifest accumulator
keeps main's three warnings (file length, and the complexity and parameter
count of its record append), one line longer.
- `npx vitest run --project domain --project services`: 7119 passed, 5
pre-existing skips.
- `npm run test:prepare`, then `npm run test:focused --` the analysis-view MCP
and CLI boundaries, the compact input schema and tool schema validity
boundaries, and the environment serve and export boundaries:
7 files, 76 passed.
New tests in `environmentManifestView.test.ts` cover:
- a literal shared across methods and depths, and the same capture without the rule;
- the spelling condition: same classes and length, case, missing digit, a colon word, a version;
- a digit-free member of a fixed-length identifier family, against a shorter word, a hyphenated
value and a family shorter than eight characters;
- merges that keep a tool's own rule, including a sibling-variance parameter under a shared one;
- both halves of a templated pair;
- format-rule positions and the segment limit.
## The showcase captures
The 50 showcase captures (45 HAR inspections and 5 `capture_browser_scenario`
captures) were projected with main's build and this branch's.
- Without the rule, both builds give identical results for every capture: the
manifest with no rules, the manifest with `after-uid-literal`,
`opaque-token`, `sibling-variance` and `sibling-pair-variance`, and the
environment-state view. 150 of 150 outputs hash equal.
- With `prefix-variance` added to `after-uid-literal`, `opaque-token` and
`sibling-variance`, 69 literal tools in 10 captures are templated, 25 of them
writes:
- Komga: collection and readlist `PATCH` and `DELETE`, book pages.
- n8n: workflow `PATCH`, `DELETE` and archive, and the reads of a workflow
whose id holds no digit.
- Memos: memo `PATCH` and `DELETE`, user settings reads, and the reads of
two memos whose ids hold no digit.
- Navidrome: playlist `PUT` and `DELETE`.
- Mealie: recipe `PATCH` and `DELETE`.
- Grist: document `PATCH` and `DELETE`, and table record writes.
- Redpanda Console: subject and topic writes.
- Sentry: release `PUT` and `DELETE`.
- Shlink: short URL `PATCH`.
- Mattermost: `me` reads, which `sibling-variance` already folds into the
user parameter.
Tools go from 1591 to 1578, because Redpanda Console's per-subject reads and
the per-memo and per-workflow reads merge.
- Literals the rule leaves alone, as intended, include Espo CRM `layout`,
Federal Register `facets`, Ghost `slug`, Shlink `stats`, Lychee
`Metrics::photo` and Vault's path names.
- The environment-state view succeeds on every capture with the rule. Its types
move to the templated collections (531 become 526 as literal ones merge); the
one fewer item view is the Redpanda Console merge.
With the write plans of #5600 (its branch with this commit and main merged in,
locally):
- Served write tools rise from 33 to 39: Komga collection create, update and
delete; n8n workflow delete; Sentry release update and delete.
- Write tools with no state target fall from 102 to 87.
- The newly modelled tools that stay unserved are limited by the capture:
- no read after the write: Komga readlists, Mealie, Navidrome, Redpanda Console;
- n8n's item read shows an expanded `shared` relation its create response
never returned;
- Shlink returns `tags` sorted while the update echoes the request's order.
## Five environments end to end
Five of the ten environments the rule changes were drawn at random, redrawing
until the draw held one whose new writes are served: Komga, Mealie, n8n,
Sentry and Shlink. Each was rebuilt on its own Linux VM with `npm pack` of
#5600, main and this branch merged locally, from the same scoped HAR as its
published version: manifest with `prefix-variance`, exported bundle, smoke
task, the generated retrieval tasks for `gpt-oss-120b` and `GLM-5.3-Flash`, and
a dry-run dataset. Where writes are served, hand-written write tasks ask for a
change in plain language and are graded from the environment's state through
`data/get`. The first n8n run found that a digit-free workflow id stayed
literal; the fixed-length clause fixed it, and n8n was rebuilt.
| Environment | Tools (published → rebuilt) | Served from state (reads / writes) | Retrieval gpt-oss | Retrieval GLM | Writes gpt-oss | Writes GLM |
| ----------- | --------------------------- | ---------------------------------- | ----------------- | ------------- | -------------- | ---------- |
| Komga | 42 → 46 | 26 / 3 | 12/12 (was 11/12) | 12/12 (11/12) | 3/4 | 4/4 |
| Mealie | 39 → 39 | 36 / 0 | 12/12 (12/12) | 12/12 (12/12) | – | – |
| n8n | 30 → 33 | 17 / 1 | 9/9 (9/9) | 9/9 (9/9) | 2/2 | 2/2 |
| Sentry | 34 → 34 | 26 / 3 | 12/12 (12/12) | 11/12 (12/12) | 2/4, rerun 0/4 | 4/4 |
| Shlink | 17 → 17 | 5 / 0 | 5/7, rerun 7/7 | 7/7 (7/7) | – | – |
Every smoke task passed. The misses:
- Sentry writes with gpt-oss: every failed episode passed `id: "sentry"` for
the `/api/0/` segment the tool schema describes as `observed: 0`, so its calls
addressed `/api/sentry/…`; every passing episode, and every GLM episode, passed
`0`. The served tools work; the format-rule parameter for a segment that only
ever held `0` invites the guess.
- Komga update with gpt-oss and Shlink's first gpt-oss run: the model provider
rejected tool calls the model generated (`null` and `undefined` for optional
query arguments) before the environment saw them.
- Sentry `qa-03` with GLM: the model never called the alert-rules tool.
The same calls were also replayed against the live applications, seeded by
the same scripts (ids differ, so each side maps its ids to names):
- Komga 1.29.1, 9 of 12 steps equal: create, update and delete of a
collection and the reads after them agree except for the generated id. The
collection list after a create omits the new collection, because that list
keeps its recorded membership, and the 404 for a deleted collection replays
the recorded body with its path and timestamp.
- n8n 1.123.85, 3 of 8 steps equal: n8n refuses to delete a workflow that is
not archived (400) and the environment deletes it; the workflow list replays
its recorded response, so a delete does not show in it; archiving is not
served. The read of the digit-free workflow failed in the first build (the
state held only its list fields) and agrees in the second, apart from ids the
seed generates.
## After the review round
The branch merged main at 52c84f6f, then kept each shared position's values
with the parameter that observed them (one donor per naming rule, the literal
taking the donor that observed it, else the earliest it is spelled like),
summarised each donor's spelling once, and let one observation form a
fixed-length family, as the requirement states. Two new tests, a mixed-rule
position and a single observed workflow id, fail on the previous head and pass
here. The gates above passed again (domain and services 7255 passed with 5
pre-existing skips; the focused boundaries 76; `jscpd` 3.49%). Over the 50
showcase captures the tools with and without `prefix-variance` are unchanged,
name for name: 69 literal tools templated, 25 of them writes.
A second review round bounded the spelling summary: characters are classified
in one pass, and a value longer than 128 characters is compared only exactly.
Its test fails on the previous head, the gates passed again (domain and
services 7257, focused boundaries 76, `jscpd` 3.49%), and the census over the 50
captures is again unchanged.