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3908 Commits
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timothyandClaude Fable 5.1 b8ea62bfa0 fix(568): reject unknown channel graphicsElementIds with 422 and discriminate builtIn by the seeded path, not the filename (#922)
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fixes #568
refs #74, #917, #921

Decisions-Edit: yes
Co-Authored-By: Claude Fable 5.1 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_015QqCpYFsKgnAnx6jVwrKiV
2026-09-05 20:52:18 +00:00
timothyandClaude Fable 5.1 fcdc381246 docs(568): the rule the branch establishes gets a record, and every row the fix moved is re-measured
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api-conventions.md now says which half of an id-list validator a sibling field may
gate (existence, never the raw-count cap) and that a lost-race recovery re-asks the
whole validator set rather than the fields whoever wrote the catch remembered.
Those, with the bound and the field-named 422, are one convention with residuals, so
they get a record -- api.top-level-id-list-validation -- and a task-signal row.
The record states what #568 does NOT settle: three validators on two DTOs is a
per-field constant, not the repo-wide rule #917 owns, and it says to expect #917 to
replace the mechanism.

graphics-elements.md: rows 35-44 re-measured against the whole ErsatzTV.Tests
project on this tree, because the fix moved five of their red sets -- Validate is
now also what the recovery path re-runs, so removing a validator from it reddens
that handler's race test too. Rows 45-47 are new and measured the same way. The
"redden more than one test" figure is recounted from the table (21 -> 24); the
cross-fixture set is unchanged at five.

The negative discriminator rows now carry a stated seeding rule: vary one half of
the identity and hold the other at the seeded value. Varying both leaves the row
rejected by the pre-#568 predicate as well, so a composite revert to it would pass
every test at that site.

Co-Authored-By: Claude Fable 5.1 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_015QqCpYFsKgnAnx6jVwrKiV
2026-09-05 21:35:15 +02:00
timothyandClaude Fable 5.1 9fc54fed87 fix(568): the raw-count cap is the request's bound, and a recovery path re-asks the whole validator set
Two holes the review round found in the previous fix, both of the same shape: a
guard that names its own fields instead of deriving them.

The deco validators short-circuited the entire Validators.IdsMustExist call when
the DecoMode does not consume the ids, which took the 512-item raw-count cap with
it -- an arbitrarily large array under Inherit/Disable parsed and materialized
with nothing bounding it. Only the EXISTENCE half is the apply path's business,
so the mode predicate is now a required argument of the shared validator and gates
that half alone; the cap runs under every mode.

The channel recovery path rechecked GraphicsElementIdsMustExist alone, so a
watermark deleted between validation and SaveChangesAsync still surfaced as the
unhandled 500 the fix exists to remove -- WatermarkId, FFmpegProfileId,
FallbackFillerId and MirrorSourceChannelId are all written by the same save and
lose the same race. Both handlers now re-ask the whole of Validate on
DbUpdateException, so a validator added later is covered without editing the
recovery path.

The API-site outside-folder discriminator test seeded an Image row, so the Kind
conjunct rejected it whatever the path comparison did: a composite revert to
Path.GetFileName(path) == filename && kind == Text passed every API test. It now
carries the seeded Kind, mirroring the seeder-site twin, so only the path half can
reject it.

Co-Authored-By: Claude Fable 5.1 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_015QqCpYFsKgnAnx6jVwrKiV
2026-09-05 21:35:15 +02:00
timothyandClaude Fable 5.1 3541683c99 docs(568): re-measure every mutation row the merged identity and the shared validator moved
Nine rows of the mutation table in docs/graphics-elements.md name a clause that this
branch's last commit moved, merged or gave new callers, and a red set is a measurement of
the tree it ships in. All were re-taken against the whole ErsatzTV.Tests project
(2139 tests, 6 skipped) on the code as it now stands, and four new rows added for the
clauses the fix introduced.

What moved and why the numbers changed:

- Row 10 was the seeded-path filter alone. `Kind` now lives inside `IsOnNowNext`, so
  dropping the lookup's `Where` drops both halves at once and reddens four tests, not
  three.
- Row 18 was the seeder's SQL `Kind == Text` filter and is now the `kind` conjunct of the
  shared predicate, so it reddens the API site too — a second cross-fixture row.
- Rows 35-37 pick up the count-cap tests, since the cap rides in the validator they
  disarm. Rows 33, 34, 38, 39 re-measured unchanged.
- Row 40's mutation text follows the API call's new two-argument shape; it reddens the new
  wrong-kind test as well.
- Rows 41-44 are the new clauses: the raw-count cap (one clause, three call sites, which
  is what its red set shows), the diagnostic-id truncation, and the two lost-race catches.

The two self-counted figures above the table were recounted from the table itself rather
than adjusted: twenty-one multi-test rows and five cross-fixture ones (13, 18, 22, 33, 41).

The deco lost-race test is renamed so no two rows cite the same test name.

api-conventions.md gains the three rules the fix establishes for any write path with a
top-level FK id list — bound the raw list, name the field, translate a lost check-then-write
race — in the handler-hardening checklist where they belong rather than as a #568 anecdote.

Refs #568

Decisions-Edit: yes
Co-Authored-By: Claude Fable 5.1 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_015QqCpYFsKgnAnx6jVwrKiV
2026-09-05 21:35:15 +02:00
timothyandClaude Fable 5.1 e7f794057d fix(568): bound the client-supplied id lists, name their field, and make Kind part of the built-in identity
Three of the four findings standing on the 2026-09-05 16:24 review verdict, which the
branch had not answered.

The count cap is the blocking one. The three id-list validators took whatever the
request carried, so the only bound on `graphicsElementIds`/`watermarkIds` was the
Kestrel body cap -- a transport limit, not a collection limit. The earlier disposition
deferred it to #917 on the grounds that `ApplyUpdateRequest` reconciles the same list
uncapped anyway; that is true and does not answer the ask, because the reconcile is
downstream of a validator that can refuse the request outright. One shared
`Validators.IdsMustExist` now carries the cap for all three, counted on the RAW list
before `Distinct` (a million copies of one id costs the same to parse and materialize
whatever the distinct count is) and before any database work.

The same helper is where the field name and the diagnostic cap now live. The 422 said
"Graphics element(s) do not exist: 999" without naming which request field carried the
999, and echoed every rejected id -- an oversized request answered with an oversized
response. Both fixed once, in the shared place, so the three sites cannot drift.

`Kind` moves into `GraphicsElementDefaults.IsOnNowNext`. The seeder required
`Kind == Text` and the API's `builtIn` did not, so an Image row at the exact seeded path
was `builtIn:true` on the wire while `GetBuiltInElementId` refused to treat it as the
built-in element -- two sites disagreeing about one row, which is the shape #568 exists
to close. Identity is now one predicate applied whole at both sites; the seeder's SQL
`Kind` filter is gone rather than kept as a duplicate, since a duplicate guard would mask
the predicate's own clause.

Also the fourth finding, the check-then-write race: `RefreshGraphicsElements` can delete a
validated element between `Validate` and `SaveChangesAsync`, handing the join insert the
FK violation the validator exists to prevent. A transaction does not close it -- neither
provider locks rows the validator merely read -- so both handlers catch `DbUpdateException`,
re-ask the existence question on a fresh context, and return the validator's own 422 when
an id has since gone; anything else keeps its own exception. Foreign keys are off in
`InMemoryTvContext`, so the trigger is simulated by an armed save-failure interceptor while
the recovery itself runs against real post-delete state.

Refs #568

Co-Authored-By: Claude Fable 5.1 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_015QqCpYFsKgnAnx6jVwrKiV
2026-09-05 21:35:15 +02:00
timothyandClaude Fable 5.1 722f0057e8 docs(568): bound the "cannot fail" claim to the two rows that measure it
The sentence explaining why the wrong-kind-and-wrong-folder case is not shipped said
"no single-clause mutation can let it through" — an unbounded quantifier over a
population nothing here measures. What is actually established is narrower and is
established: rows 10 and 18 are the two clauses of `GetBuiltInElementId`, each measured,
and dropping either leaves the other rejecting such a row. The claim now says that, and
names those rows as its evidence.

Refs #568

Co-Authored-By: Claude Fable 5.1 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_015QqCpYFsKgnAnx6jVwrKiV
2026-09-05 21:35:15 +02:00
timothyandClaude Fable 5.1 a8240aba72 docs(568): point the deco-validator aside at the carve-out that is above it, not below
The §8 Channel-graphics aside cited the deep-FK-in-a-nested-list exception as "below";
that exception is §3b line 314 and the aside is line ~944, so the pointer sent the reader
the wrong way. It now names the section (§3b above) rather than a direction alone, so a
later reflow cannot invert it again. Re-wrapped the same passage so `deep-FK-in-a-nested-list`
no longer straddles a soft line break — Markdown joins those with a space and the term
rendered with a stray gap mid-word.

Refs #568

Co-Authored-By: Claude Fable 5.1 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_015QqCpYFsKgnAnx6jVwrKiV
2026-09-05 21:35:15 +02:00
timothyandClaude Fable 5.1 7fa223a567 test(568): drop the different-kind case no single-clause mutation can redden, and measure the API-site clause
`Ignores_A_Same_Named_Element_Of_A_Different_Kind` seeded an Image row at
`/templates/image/on-now-next.yml` and asserted the backfill ignores it. Under the
bare-filename lookup that row was rejected by the `Kind == Text` filter alone, which is
what its comment described. Under the full-path predicate the path rejects it first, so
neither clause is load-bearing for it: dropping the `Kind` filter reddens only
`A_Row_Of_Another_Kind_At_The_Seeded_Path_Does_Not_Suppress_The_Built_In_Row` (row 18) and
dropping `IsOnNowNext` reddens only the three tests of row 10. The test survived both and
its comment claimed a mechanism it no longer exercised. Its scenario is the conjunction of
two already-pinned negatives and is strictly weaker than
`Ignores_A_Same_Named_Same_Kind_Element_Outside_The_Seeded_Folder`, so it is retired rather
than reshaped, and graphics-elements.md now says why the combination is deliberately not
shipped — otherwise the next reader re-adds it.

Row 40 records the API-side half of the discriminator, which had a measured red and no row.
Measured whole-project on this tree, `dotnet test ErsatzTV.Tests/ErsatzTV.Tests.csproj`:
baseline `Failed: 0, Passed: 2123, Skipped: 6, Total: 2129`; with
`BuiltIn = GraphicsElementDefaults.IsOnNowNext(e.Path)` reverted to
`Path.GetFileName(e.Path) == GraphicsElementDefaults.OnNowNextFileName`,
`Failed: 1, Passed: 2122`, the sole red being
`GetAllGraphicsElementsForApi_Should_Not_Mark_Same_Filename_Outside_Seeded_Folder_As_BuiltIn`.
The table's two self-counts were recounted from the table after adding the row and both
still hold: sixteen rows redden more than one test, three of those span two fixture classes
(13, 22, 33).

Refs #568

Co-Authored-By: Claude Fable 5.1 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_015QqCpYFsKgnAnx6jVwrKiV
2026-09-05 21:35:15 +02:00
timothyandClaude Fable 5.1 9f0f21ec52 docs(568): measure the five validator mutation claims the tests assert in prose
Five test comments asserted "reddens if <validator> alone is removed" with
nothing binding the sentence to a measurement -- the shape
testing.mutation-claims-are-executed refuses, and the shape whose CLAIMS half of
the manifest cannot reach a .NET proof. The repo's record for those is the
mutation table, so each claim got a row: all five mutated in turn against this
tree with the whole ErsatzTV.Tests project re-run (the tuple-arity fix included,
since a mutation that does not compile is not a result).

35 GraphicsElementIdsMustExist out of UpdateChannelHandler.Validate -> 2 red;
36/37 the deco graphics/watermark validators out of UpdateDecoHandler.Validate
-> 1 red each; 38/39 the two Consumes* mode gates -> 1 red each. Sixteen rows now
redden more than one test; three still span two fixture classes.

Co-Authored-By: Claude Fable 5.1 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_015QqCpYFsKgnAnx6jVwrKiV
2026-09-05 21:35:15 +02:00
timothyandClaude Fable 5.1 c249ca4110 test(568): bind the test's mutation claim to the measured rows, not to itself
The comment asserted an outcome ("also reddens if the Kind filter is dropped")
with nothing tying it to a measurement -- the shape testing.mutation-claims-are-
executed exists to refuse. Both clauses it covers are rows of the mutation table
in docs/graphics-elements.md, measured against this tree; cite them.

Co-Authored-By: Claude Fable 5.1 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_015QqCpYFsKgnAnx6jVwrKiV
2026-09-05 21:35:15 +02:00
timothyandClaude Fable 5.1 41fd1f64de docs(568): re-measure the rows the seeder's lookup call moved, and recount the table's own claims
The seeder now resolves the built-in row through GetBuiltInElementId, which puts
that lookup on a second call path, so every row whose clause the new call can
reach was re-run against this tree: 10 and 33 unchanged, 18 reinstated (the
Kind == Text filter has a red now that a wrong-kind row at the seeded path can
suppress the row the lookup needs), 21 unchanged, 22 gains a third red, and 34
is new (the existence check re-derived as SQL instead of asking the lookup).

Two stale measurements went with it. The "known clauses with no red" bullet for
the Kind filter quoted 2121 passed against a tree that produces 2123, having been
taken before the branch's last two tests existed -- the whole bullet is gone now
that the clause has a red. And the per-fixture-filter trap counted thirteen
multi-test rows with two spanning two fixture classes, true on origin/main and
false here since the branch added rows: fifteen and three, both recounted from
the table, with a note that they are.

Decisions-Edit: yes

Co-Authored-By: Claude Fable 5.1 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_015QqCpYFsKgnAnx6jVwrKiV
2026-09-05 21:35:15 +02:00
timothyandClaude Fable 5.1 74a6e01712 fix(568): the seeder asks the built-in lookup, instead of re-deriving it in SQL
EnsureBuiltInElementRow decided whether the built-in row already existed with its
own `AnyAsync(e => e.Path == target)` -- the one discriminator site left comparing
in SQL after 28827a7d3 moved the rest in memory. Two ways it could answer
differently from GetBuiltInElementId, each leaving the built-in element
undiscoverable for the life of the install: string equality in SQL is the
provider's collation to decide, so on MySQL's normally case-insensitive default a
case-variant row satisfied the check and the canonical row was never created; and
it ignored Kind, so a row of another kind at the seeded path suppressed the Text
row the lookup resolves.

Ask GetBuiltInElementId instead, so the existence question and the resolution
question are the same code. The wrong-kind half is observable under SQLite and is
now pinned; the collation half is not (BINARY and an ordinal comparison agree on
every input) and stays held by keeping the comparison out of SQL.

Co-Authored-By: Claude Fable 5.1 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_015QqCpYFsKgnAnx6jVwrKiV
2026-09-05 21:35:15 +02:00
timothyandClaude Fable 5.1 1149d96eff test(568): the watermark mode-gate test starts from an actual attachment
Its graphics twin seeds an element, attaches it, then saves with Inherit and an
unknown id, so "the join is empty afterwards" distinguishes a cleared attachment
from one that was never there. The watermark half asserted the same emptiness on
a deco that had no watermarks to begin with -- true of the fixture regardless of
what the handler did, which is a fixture that omits the field it means to test.

Seed a ChannelWatermark, attach it under Override, then save with Disable and
watermarkId 777. Re-measured 2026-09-05 with the ConsumesWatermarkIds guard
removed alone from the committed tree: 1 failed / 4 passed, the failure being
Should_Ignore_An_Unknown_WatermarkId_When_The_Mode_Does_Not_Consume_It. Whole
project green with the guard in place: 2123 passed, 6 skipped, 0 failed.

Refs #568

Co-Authored-By: Claude Fable 5.1 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_015QqCpYFsKgnAnx6jVwrKiV
2026-09-05 21:35:15 +02:00
timothyandClaude Fable 5.1 cb11116d4f docs(568): stable row ids in the mutation table, and the case-sensitivity sign-off the issue's wording invites
Two review findings, both about docs the branch already rewrote.

The mutation-coverage table in docs/graphics-elements.md ended up with two rows
numbered 24 -- the new IsOnNowNext row was inserted after 23 without checking
what followed -- while 18 was vacated when the Kind-filter row moved to the
"no red" list. The section's own prose cites rows by number ("the IsOnNowNext
clause (row 10)"), so a duplicate id makes a citation ambiguous. The new row
becomes 33, the next unused number, and the rule that made it 24 in the first
place is now written down: a row number is an identity, not a position, so a new
row takes the next unused number, nothing is renumbered, and a retired clause
leaves its number vacant rather than having it reused under a new meaning. Both
row claims were re-measured and are unchanged; only the id moves.

#568's second half is titled "builtIn discriminator is filename-only,
case-sensitive, folder-agnostic", and the branch removes the first and third
while deliberately keeping case sensitivity -- which reads like two thirds of a
done-when box. It is not: the remedy the same box prescribes, "full seeded
relative path", is exactly as case-sensitive as the filename match it replaces,
so the three adjectives describe one predicate rather than name three separable
demands. Read the other way the box would be unsatisfiable by its own remedy.
The reason case sensitivity is kept -- a case-INsensitive test hands the built-in
identity to a user element differing from the seeded path only in case -- lived
only in GraphicsElementDefaults.cs, where a reader arriving from the issue title
would not find it. It is now in the active record that owns the discriminator.

Refs #568

Decisions-Edit: yes
Co-Authored-By: Claude Fable 5.1 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_015QqCpYFsKgnAnx6jVwrKiV
2026-09-05 21:35:15 +02:00
timothyandClaude Fable 5.1 0e92c147a4 fix(568): a deco validator may only reject ids the apply path would consume
Review found the new UpdateDecoHandler FK validators ran unconditionally while
ApplyUpdateRequest reads either id list ONLY under DecoMode.Override or Merge --
under Inherit/Disable it Clear()s the join and ignores the field. So the branch
turned a previously-succeeding save into a 422 over ids that were about to be
discarded, and the SPA reaches that shape: DecosScreen's toReplaceRequest sends
watermarkIds/graphicsElementIds from the draft whatever the mode selector says,
while the picker itself is disabled off-Override. RefreshGraphicsElementsHandler
deletes rows whose template file is gone (cascading the join away), so a stale
editor draft could be locked out of saving a deco back to Inherit, with a 422
naming an element the disabled UI does not even show.

Measured before the fix on the review's E2E instance: PUT /api/v1/decos/1 with
graphicsElementsMode=Inherit and graphicsElementIds=[999] returned 422
"Graphics element(s) do not exist: 999".

The mode predicate is now named once per collection -- ConsumesWatermarkIds /
ConsumesGraphicsElementIds -- and read by both the apply path and its validator,
rather than the apply path holding one copy and the validator implying another.
A second copy is what let the two disagree in the first place.

Two tests pin the gate, one per collection, each reddening when its guard alone
is removed:

  Should_Ignore_An_Unknown_GraphicsElementId_When_The_Mode_Does_Not_Consume_It
  Should_Ignore_An_Unknown_WatermarkId_When_The_Mode_Does_Not_Consume_It

Measured 2026-09-05, each guard removed alone from the committed tree: 1 failed
/ 4 passed, and the failure is exactly the test named for that guard. Both
assert the apply-path outcome as well as the accept, so a validator that stopped
rejecting for some other reason would not satisfy them.

Refs #568

Co-Authored-By: Claude Fable 5.1 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_015QqCpYFsKgnAnx6jVwrKiV
2026-09-05 21:35:15 +02:00
timothyandClaude Fable 5.1 ae314aa5ea docs(568): re-measure the built-in lookup's mutation rows against the code as it now stands
The mutation-coverage table's claims were measured against an earlier shape of
GetBuiltInElementId and are re-taken here, because the lookup changed twice on
this branch (filename -> seeded path, then SQL -> in-memory IsOnNowNext) and a
claim about which tests a mutation reddens does not survive either move on its
own.

Measured 2026-09-05, each mutation applied alone to the committed tree:

- Row 10, the seeded-path filter removed: 3 red, not the 2 the row listed.
  Ignores_A_Case_Variant_Of_The_Seeded_Path joins the two already named,
  because without the filter every Text row resolves as the built-in one.
- Row 24 is new: IsOnNowNext loosened from Ordinal to OrdinalIgnoreCase reddens
  exactly the two case-variant tests, 2 failed / 77 passed. One row covers both
  discriminator sites because they now share the predicate.
- The Kind==Text filter's "no red" bullet is re-measured across the WHOLE
  ErsatzTV.Tests project -- 2121 passed, 6 skipped, 0 failed -- rather than the
  11 tests of the one file that names GetBuiltInElementId. ChannelGraphicsDefaults
  reaches the lookup from the channel-create handlers as well, so the narrower
  population could not have seen a red there. The conclusion is unchanged; what
  changes is that it is now measured over the population that could falsify it.

Co-Authored-By: Claude Fable 5.1 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_015QqCpYFsKgnAnx6jVwrKiV
2026-09-05 21:35:14 +02:00
timothyandClaude Fable 5.1 131c63f7f4 fix(568): one ordinal identity predicate for the built-in element, applied in memory at both sites
The branch moved the `builtIn` discriminator from a bare filename to the full
seeded path, but split how the two sites evaluate it: the API handler compares
in memory (ordinal) while GetBuiltInElementId's new `.Where(e => e.Path ==
OnNowNextSeededPath)` compares in SQL. GraphicsElement.Path takes no explicit
collation -- TvContext.OnModelCreating pins one only on the listed name/title
columns -- so SQLite answers that case-sensitively and MySQL uses the server
default, which is normally case-INsensitive. On MySQL the two discriminators
could therefore disagree about the same row: AttachOnNowNextByDefault would
resolve a case-variant user element as the built-in one while the API reported
builtIn:false for it.

Collapse both onto GraphicsElementDefaults.IsOnNowNext, ordinal, applied in
memory. GetBuiltInElementId goes back to loading the Text candidates and
filtering in memory (the shape it had before this branch), keeping only the
`Kind` enum filter in SQL.

The prose claimed more than the code did. "A filename-only comparison is
case-sensitive-by-accident" appeared in four places as a defect the full-path
fix removed; a full-path comparison is exactly as case-sensitive, so the clause
said nothing and implied a fix that had not happened. Case sensitivity is now
deliberate and stated as such -- the built-in element is the exact file the
seeder wrote, at the exact path it wrote it to -- and the reason the comparison
is kept out of SQL is recorded where the predicate lives.

docs/decisions/records/graphics/channel-level-attachment.md said BuiltIn was
"computed by comparing the row's `Path` to GraphicsElementDefaults.
OnNowNextFileName", which was true of neither the pre-#568 rule (filename to
filename) nor the current one; an active record resolved by key now states the
current predicate in its own sentence rather than in a parenthetical.

Two tests pin the ordinal rule against a loosening to OrdinalIgnoreCase, one
per site. Measured: OrdinalIgnoreCase reddens exactly
GetAllGraphicsElementsForApi_Should_Not_Mark_A_Case_Variant_Of_The_Seeded_Path_As_BuiltIn
and Ignores_A_Case_Variant_Of_The_Seeded_Path, 2 failed / 77 passed of the 79
graphics tests. They do NOT pin provider independence -- under SQLite's BINARY
collation an equivalent SQL comparison answers identically, so no test in this
suite can distinguish the two. That is stated at each site rather than left for
a reader to assume the tests cover it.

Decisions-Edit: yes

Co-Authored-By: Claude Fable 5.1 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_015QqCpYFsKgnAnx6jVwrKiV
2026-09-05 21:35:14 +02:00
timothyandClaude Fable 5.1 352305ade8 fix(568): sync docs/comments to the seeded-path builtIn discriminator, harden UpdateDecoHandler's twin FK ids
Review round on #568 found the branch changed builtIn identity from a bare
filename comparison to the full seeded path (GraphicsElementDefaults.
OnNowNextSeededPath) but left several places still asserting the old rule:

- docs/decisions/records/graphics/channel-level-attachment.md and
  on-now-next-on-by-default.md (both status: active) still described a
  filename-only match; corrected in place and cross-referenced.
- docs/api-conventions.md §8 quoted the retired
  `Path.GetFileName(element.Path) == OnNowNextFileName` expression verbatim;
  replaced with the current OnNowNextSeededPath comparison and a note on the
  UpdateChannelHandler 422 hardening.
- Three in-code comments (GraphicsElementDefaults.cs, GraphicsElementSeeder.cs,
  ChannelGraphicsDefaults.cs) still said "identity is the filename".
- docs/graphics-elements.md's mutation-coverage table (row 10, row 18) named
  clauses that no longer exist or no longer redden any test post-#568;
  re-measured directly (removing the seeded-path check reddens
  Ignores_A_Non_Built_In_Element_With_A_Different_Filename and
  Ignores_A_Same_Named_Same_Kind_Element_Outside_The_Seeded_Folder; removing
  the Kind==Text filter alone reddens nothing, so it moves to the "known
  clauses with no red" list with that measurement dated).

Also closed the should-fix twin: UpdateDecoHandler's graphicsElementIds and
watermarkIds are top-level ReplaceDecoRequest fields in the same position as
UpdateChannelRequest.graphicsElementIds (not the deep-FK-in-a-nested-list
carve-out), and the reconcile in ApplyUpdateRequest blindly Added a join row
for any incoming id -- the identical FK-constraint-to-500 defect #568 fixed
on the channel path. Added GraphicsElementIdsMustExist/WatermarkIdsMustExist
validators mirroring UpdateChannelHandler's, pinned by
UpdateDecoGraphicsElementsTests (reddens when either validator alone is
removed -- verified).

Decisions-Edit: yes

Co-Authored-By: Claude Fable 5.1 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_015QqCpYFsKgnAnx6jVwrKiV
2026-09-05 21:35:14 +02:00
timothyandClaude Fable 5.1 c84bdd2427 docs(568): record the full-seeded-path builtIn discriminator in graphics-elements.md
Co-Authored-By: Claude Fable 5.1 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_015QqCpYFsKgnAnx6jVwrKiV
2026-09-05 21:35:14 +02:00
timothyandClaude Fable 5.1 900dac9832 fix(568): reject unknown channel graphicsElementIds with 422; discriminate builtIn by seeded path not filename
UpdateChannelHandler.Validate never checked incoming graphicsElementIds against
GraphicsElements, so PUT /api/v1/channels/{id} with a non-existent id hit
FK_ChannelGraphicsElement_GraphicsElement_GraphicsElementId at SaveChangesAsync
and surfaced as an unhandled 500. Add GraphicsElementIdsMustExist, following the
existing FFmpegProfileMustExist/WatermarkMustExist/FillerPresetMustExist shape,
so an unknown id now returns 422 for parity with every other FK field on this
full-replace DTO.

GetAllGraphicsElementsForApiHandler and GraphicsElementSeeder.GetBuiltInElementId
keyed builtIn off Path.GetFileName(e.Path) == OnNowNextFileName -- folder-agnostic,
so a user element named exactly on-now-next.yml in any other template folder would
also report builtIn:true. Both now compare against
GraphicsElementDefaults.OnNowNextSeededPath, the full path the seeder actually
writes to.

Follow-up from the #74 whole-branch review (2026-07-22), deferred as
data-safe/not SPA-reachable.

Co-Authored-By: Claude Fable 5.1 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_015QqCpYFsKgnAnx6jVwrKiV
2026-09-05 21:35:14 +02:00
timothyandClaude Fable 5.1 8cda92748e docs(901): a predicate over an artifact whose grammar it does not implement pins the artifact whole; a shape-matcher is the exception that argues for itself (#920)
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fixes #901

Co-Authored-By: Claude Fable 5.1 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_015QqCpYFsKgnAnx6jVwrKiV
2026-09-05 19:29:44 +00:00
timothyandClaude Fable 5.1 022a05acb2 docs(901): the third count had no in-repo source, so it becomes what both cited artifacts say
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The thesis measurement quoted three numbers side by side. Two are verbatim from the
corpus — `docs/guard-inventory.md:179` "wrong NINE times", and
`scripts/tests/test_image_build_delegates_the_spa_suite.py:772` "defeated seven measured
ways". The third, "a lexical rule over a hook preamble **five**", was reachable only from
#901's own issue body ("Five spellings, one mechanism"); nothing in the repo re-derives
it, and both artifacts the record cites for #891 —
`docs/decisions/records/process/hook-resolves-inputs-from-repo-root.md:64-68` and
`scripts/tests/test_hook_fire_log.py:144` — count the SAME sequence as three ("Three
successive lexical rules over this line each fell"). Counted as spellings it is eight or
nine; five is neither basis. A number in prose that no artifact re-derives is this
record's own subject matter, and "Measured 2026-08-30" invites trust rather than
re-derivation.

Answered by subtraction, not by new prose:
- body: the third clause states what both cited artifacts state — three successive
  lexical rules, each defeated by the next shape.
- `rule:` drops the copied numeric triple ("nine, seven and five times") for a pointer to
  the sequences below, so the counts live in one place (`dont-keep-a-copy-of-a-set`).
- `signals:` swaps the unsourced token for the sourced one.

Same class, found while checking the neighbours: "would have licensed the parser above
through most of nine rounds" (`rule:` and body) counted #887's NINE DEFECTS as rounds —
guard-inventory records them as nine defects across THREE cold-review rounds. Now "most
of those nine defects".

Body stays 58 lines; the paragraph is reflowed at the file's existing width.

Refs #901

Co-Authored-By: Claude Fable 5.1 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_015QqCpYFsKgnAnx6jVwrKiV
2026-09-05 19:47:05 +02:00
timothyandClaude Fable 5.1 81358dec5a docs(901): the acceptance hole belongs to the REJECTED splitter, so the clause claiming a second one is deleted
`dc3f158bc` corrected a false universal ("this arm's errors are refusals, never
acceptances") and, in the same sentence, appended a second unmeasured
fail-direction claim: "and the `split(\"\\n\")` residual below is the second
acceptance of the same kind". That clause inverts the paragraph it points at.

MEASURED, by loading the module and calling its own primitives with
`CANONICAL_SINK_ASSIGNMENT + \x0c + "rm -rf /tmp/nothing"` on one physical line
followed by `CANONICAL_SINK_SOURCE`:

  instrumentation_faults(...)                       -> "the sink preamble is not
                                                        the canonical two lines"
  splitlines() selection == [CANON, SOURCE]         -> True   (ACCEPTS)
  split("\n")  selection == [CANON, SOURCE]         -> False  (REFUSES)

The shipped `split("\n")` refuses exactly where the rejected `splitlines()`
accepts, which is what the pre-existing paragraph six lines below already says.
There is no second acceptance below; the acceptance belongs to the alternative
that was NOT shipped. `\x0c` is not a line terminator for bash either, so
`split("\n")` matches the shell the checker models and has no hole of this kind.

The FIRST half of the sentence stands and was re-measured: a hook carrying the
two canonical lines plus `v="ETV_HOOK_FIRE""_LIB=/tmp/evil.sh"; eval "$v"`
produces no preamble fault, so the selector really does accept a writer that
never spells the literal. Answered by SUBTRACTION per the brief: the sentence
ends at "not all refusals." and no replacement prose is written.

`dc3f158bc`'s message argues from the same inversion ("the comment already
conceded an acceptance hole of the same kind six lines later"); that half of its
reasoning is withdrawn here. Its correction of the universal is unaffected — the
selector escape it names is structural and independently measured, above.

Co-Authored-By: Claude Fable 5.1 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_015QqCpYFsKgnAnx6jVwrKiV
2026-09-05 19:05:31 +02:00
timothyandClaude Fable 5.1 20875b0ca7 docs(901): answer round seven by SUBTRACTION — the thesis loses both absolutes, the list loses two copies
Round seven's blocker was the record's own thesis sentence, and the fix is to
delete rather than to re-argue. Six rounds each replaced a refuted absolute with a
fresh one; this one states only what was measured.

THE THESIS (body). Struck: "a pin cannot be defeated by a respelling of what it
COMPARES" and "nothing [stays exposed] for a whole-file pin". Both are false for
the record's own worked whole-file pin — measured against the guard's own
primitives:

    _normalise_lines("const flag = '--run --reporter=x';")
      == _normalise_lines("const flag = '--run   --reporter=x';")   -> True
    _normalise('RUN npm ci && echo "a b"')
      == _normalise('RUN npm ci && echo "a     b"')                 -> True

Both pairs differ in bytes and both are respellings of what the pin compares.
`PINNED_VITE_CONFIG` — the pin the record calls "pinned WHOLE" — is compared
through `_normalise_lines`, so its normalisation is a second exposure axis beside
the selector's. The record already refuted itself twice: `rule:` ends "A pin also
declares its NORMALISATION and what the normalisation cannot see", and `mechanics:`
says the whitespace collapse "including inside a QUOTED STRING" belongs to both
TEXT pins. What replaces the sentence is the fail DIRECTION alone — a pin's is a
false RED, a shape-matcher's a false GREEN — plus the declaration obligation the
rule already carries. No new universal is written in its place.

MECHANICS. "named once so the checker, the mutation proofs and the hooks cannot
come to mean different strings" is deleted, not repaired: the assignment string is
written out at THREE sites in `test_hook_fire_log.py` (measured by walking the AST
and comparing each assembled string to `CANONICAL_SINK_ASSIGNMENT` — the constant,
and the `current` local of `test_an_ENV_VAR_resolved_sink_path_is_DETECTED` and of
`test_the_NEXT_env_var_to_be_invented_is_DETECTED`). The source comment making the
same claim is corrected in place, and its correction is STRUCTURAL: it names the
three sites and the `current in text` assertion each proof carries, and asserts no
mutation outcome, because "an edit here faults loudly there" would be a `CLAIMS`
entry under `testing.mutation-claims-are-executed` — wherever it is written — or it
is not written. Same reason `4d5bd0dbb` removed the outcome claim from `mechanics:`
rather than binding it.

THE QUALIFYING-GRAMMAR LIST now exists once, in the record's `rule:`.
`docs/README.md` and `docs/guard-inventory.md` state the operative test — an
artifact with a grammar the predicate does not implement — and point at the record.
The copies had already disagreed inside the commit that wrote them:
`docs/README.md` carried five of the six members, omitting JSON5, which is the
member the issue's own correction comment names as the one the narrow "shell or
config TEXT" framing would have let through (`dont-keep-a-copy-of-a-set`, #869).
Rider 1 drops its copy of the vite `DEFAULT_CONFIG_FILES` ordering the same way,
deferring to the dated reading in the `test_image_build_delegates_the_spa_suite.py`
row.

Gate: `pytest scripts/tests -q` 1599 passed, 3 skipped (all pre-existing by-design
skips); `decisions_validate.py` OK with the record off the >60-line list; catalog
regenerated with no diff; ruff clean; `check-doc-narrative --diff origin/main` 0
warnings.

Refs #901

Co-Authored-By: Claude Fable 5.1 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_015QqCpYFsKgnAnx6jVwrKiV
2026-09-05 18:38:20 +02:00
timothyandClaude Fable 5.1 dc3f158bcb docs(901): #885 merged, so the sentence the record's structural fact refutes is corrected at its source
`scripts/tests/test_hook_fire_log.py:154` ended "this arm's errors are refusals,
never acceptances". That is false for the SELECTION, which is the half this branch's
record is about: `mentions` is chosen by the literal `ETV_HOOK_FIRE_LIB`, so a writer of
that variable which never spells the literal is outside the compared set altogether, and
the checker never sees it. The comment already conceded an acceptance hole of the same
kind six lines later, about `split("\n")` versus `splitlines()`, so the universal was
contradicted inside its own block.

The correction stays STRUCTURAL — it reads the selector one line below and says what the
selector reaches — and makes no claim about what a mutated hook would return. An outcome
claim would be a `CLAIMS` entry in `scripts/tests/mutation_manifest.py` or nothing, per
`testing.mutation-claims-are-executed` as amended by #881, which is the same reason
`mechanics:` states the selector rather than a measured result (`4d5bd0dbb`).

WHY THIS LANDS NOW: #885 closed while this branch was in review (merged as #919,
`c30847204`), which frees `scripts/tests/`. Of the two obligations `47619320e` recorded
as owed, that message is superseded here:

- DISCHARGED: this one, inline, above.
- NOT OWED, and the reason is not the blocker: the `CLAIMS` entry for the hook-preamble
  selector. `4d5bd0dbb` removed the outcome claim from `mechanics:` rather than binding
  it, so the record asserts no mutation outcome and the rule it invokes has nothing to
  bind. Re-adding a claim in order to bind it would reverse a review-mandated change; an
  executed GREEN entry (target `.claude/hooks/decisions-guard.sh`, clause = the canonical
  sink assignment, replacement = that line plus the `eval` spelling, plus the mandatory
  `reach_replacement`/`reach_expect`) remains available as an ENRICHMENT of the structural
  fact, and belongs to whoever wants the fact executed rather than argued.

Rebased onto `366a0f904..c30847204` on the way: the `docs/guard-inventory.md` conflict is
two rows, resolved by taking #885's newer `test_workflow_persist_credentials.py` row
(it gained a second invariant) and this branch's `test_image_build_delegates_the_spa_suite.py`
row (it dates the vite `DEFAULT_CONFIG_FILES` reading to 8.1.3 and to the lockfile).
`docs/decisions/README.md` regenerated, not merged.

Co-Authored-By: Claude Fable 5.1 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_015QqCpYFsKgnAnx6jVwrKiV
2026-09-05 16:01:18 +02:00
timothyandClaude Fable 5.1 868ab657d8 docs(901): the record was wrapped narrower than its own corpus, so 65 lines was a WRAP width, not a word count
`798e5ee40` stopped at 65 prose lines and gave a reason: the remaining candidates for
removal were the *why* behind non-obvious choices, which `docs.no-session-narrative`
says to keep. That reason is sound about the WORDS and wrong about the LINE COUNT,
because the two are not the same quantity. `decisions_validate.record_prose_lines` counts
PHYSICAL lines, and this record was the narrowest thing in the set being measured:

    max body width, 222 active records: median 106; 28 at <=100, 154 at 101-120, 40 >120
    this record: 100. The sibling it cites by key, process.hook-resolves-inputs-from-repo-root: 116.

The 60-line ceiling was derived at #620 from that distribution, so measuring a
100-column record against it charges the record for a wrap width the corpus does not use.
Re-wrapping the seven body paragraphs at 116 — the exact width of the neighbour record —
takes the body from 66 physical lines to 58, and the validator now reports 58, off the
over-ceiling list (50 records over -> 49, and the key no longer appears).

The reflow removes NOTHING: the script asserted word count equal before and after (893)
and whitespace-normalised body text byte-identical, and refused to write otherwise. What
it buys is that the issue's `## Done-when` box "The record is under the 60-line advisory
prose ceiling" is satisfiable as written, so `pretooluse-merge-consent.sh` is not asked
to derive consent from a box ticked falsely or left standing. The advisory itself was
never breached — the ceiling is a `::warning::`, the validator exits 0, and 49 of 222
records are over it inside the 2-25% CEILING_MINORITY band.

Also: the file was the only one of 222 records with no final newline. Fixed in the same
commit; `record_prose_lines` is `splitlines()`, so it does not move the count.

Co-Authored-By: Claude Fable 5.1 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_015QqCpYFsKgnAnx6jVwrKiV
2026-09-05 15:59:16 +02:00
timothyandClaude Fable 5.1 11f92761af docs(901): the whitespace collapse belongs to the PRIMITIVE, so it belongs to both text pins
`mechanics:` opened with a universal — "a residual read off one of them does not
transfer to the others" — and then attributed the collapse-whitespace-inside-a-string
residual to `_normalise_lines` alone. It does transfer, between exactly the two pins
that sentence separates: `_normalise_lines` is `_normalise` applied per line
(`scripts/tests/test_image_build_delegates_the_spa_suite.py:327`), and the stage-command
pin calls `_normalise` directly (lines 386/389, compared at line 586), so it cannot see a
whitespace change inside a quoted shell string either. For SHELL text that is the more
consequential of the two residuals, which is the opposite of what the old ordering
implied.

The sentence now says NEED NOT transfer, names the one that does, and puts the
string-literal blindness on `_normalise` where it originates. The vite-only fact that
survives is the blank-line drop, and the claim that the test STATES its residual is
narrowed to the vite test, which is the only one of the two that does.

The hole is dormant rather than live — no entry in `PINNED_STAGE_COMMANDS` carries a
quote character — but the defect was the prose universal, which the record's own rule
("a pin also declares its NORMALISATION and what the normalisation cannot see") is what
this paragraph exists to demonstrate. This is the third finding read off this one
sentence: `b8dc321af` corrected its fault-message half and `4d5bd0dbb` its
outcome-claim half.

TWO OBLIGATIONS ARE OWED to the closing record, both blocked on #885 (open, so this
branch does not touch `scripts/tests/`), and both freed together when it closes:

1. The `CLAIMS` entry in `scripts/tests/mutation_manifest.py` for the hook-preamble
   selector — target `.claude/hooks/decisions-guard.sh`, clause = the canonical sink
   assignment, replacement = that line plus the `eval` spelling, proof = a
   `test_hook_fire_log.py` node, outcome=GREEN with the mandatory
   `reach_replacement`/`reach_expect`. Until then `mechanics:` states the SELECTOR as a
   structural fact and makes no outcome claim (`4d5bd0dbb`).

2. The comment at `scripts/tests/test_hook_fire_log.py:153-154`, which ends "this arm's
   errors are refusals, never acceptances". The structural fact this record ships — the
   compared set is the non-comment-led lines containing the literal `ETV_HOOK_FIRE_LIB`,
   so a reassignment that never spells the literal is outside the selection — is an
   ACCEPTANCE by that arm, and the same comment block concedes the class five lines later
   ("so it is an acceptance hole, not only a stricter refusal"). The sentence is owed a
   correction; the record documents the residual beside it in the meantime.

Co-Authored-By: Claude Fable 5.1 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_015QqCpYFsKgnAnx6jVwrKiV
2026-09-05 15:59:16 +02:00
timothyandClaude Fable 5.1 761a71278d docs(901): pay for the two corrections by tightening the prose around them
The two corrections added four prose lines to a record already one line over
the 60-line advisory ceiling. Recover what can be recovered without losing
substance: reflow the paragraphs, drop the padding ("and it fails silently"
→ ", silently"; "the count rises" → "and rises"), and cut one restatement.

It lands at 65 lines, not 60. That is a deliberate stop: the remaining
candidates are the *why* behind non-obvious choices — which the repo's own
docs rule says to keep — and `decisions_validate` reports the constant itself
as drifted from the distribution it is supposed to mark the tail of (p90=104,
p95=142, 50 of 222 records over it). The validator passes.

Refs #901

Co-Authored-By: Claude Fable 5.1 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_015QqCpYFsKgnAnx6jVwrKiV
2026-09-05 15:59:16 +02:00
timothyandClaude Fable 5.1 0977f04174 docs(901): the respelling-immunity thesis is bounded by the pin's REACH, and the neighbour doc declines the rule it was cited for
Two prose overclaims in the new record, both of the shape the record itself
exists to police.

The thesis sentence generalised over the two worked pins and held for one.
`PINNED_VITE_CONFIG` compares a whole file, so no respelling escapes it; the
hook-preamble pin compares a SELECTION (`test_hook_fire_log.py:161` keeps only
the lines containing the literal `ETV_HOOK_FIRE_LIB` that are not comment-led),
so it must recognise a line before it can reject it — which is exactly the
residual `mechanics:` documents four lines later. Bound the immunity to what a
pin COMPARES and name the leftover exposure as the selector's reach.

The neighbour citation claimed `docs/defect-shapes-773.md` §4 "argues the
general form". §4 is a ranked table of detectors A-G — none of them this rule,
and A is already assigned to `guard-derives-population-from-source` by the
preceding clause. The doc's nearest class is `string-predicate churn` in the
§3.6 partition, marked `no detector proposed`, and §3.7 argues the class away as
a cross-cutting property (2 of 33 round-churn records). Only §4's closing
meta-finding — class-level rules beat one record per instance — supports
anything here, and it supports the FORM, not the content. Say that.

Refs #901

Co-Authored-By: Claude Fable 5.1 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_015QqCpYFsKgnAnx6jVwrKiV
2026-09-05 15:59:16 +02:00
timothyandClaude Fable 5.1 c67b33cdcd docs(901): a mutation OUTCOME is a manifest entry or it is not written — state the selector instead
Round three, blocking. The record's `mechanics:` field asserted a measured
mutation outcome — that appending an `eval` which composes `ETV_HOOK_FIRE_LIB`
at runtime leaves `instrumentation_faults` returning `[]`, identical to the
unmutated baseline — with no `CLAIMS` entry in scripts/tests/mutation_manifest.py.
`testing.mutation-claims-are-executed` as amended by #881 puts a prose claim
about a mutation's outcome under the executed-claim rule wherever it is written,
a decision record included, and this branch's own docs/README.md row restates
that. A record whose rule text requires "each defeat the matcher claims to catch
is a DECLARED, executed mutation" cannot itself carry an undeclared one.

scripts/tests/ is held by #885, which is open, so the entry cannot be added
here. What replaces the outcome claim is the structural fact that carries the
same point and needs no execution: the compared set is the lines containing the
literal `ETV_HOOK_FIRE_LIB` that are not comment-led, so the pin reaches exactly
the two preamble lines and a later reassignment which never spells the literal
is outside the selection — whatever the checker then returns. The `CLAIMS` entry
is owed once scripts/tests/ is free.

Three more from the same round:

- `_normalise_lines` was a universal over three pins that holds for one. The
  stage commands compare through `_normalise` (continuations joined, whitespace
  within one command collapsed); the script map is dict equality over parsed
  JSON and compares no text; only PINNED_VITE_CONFIG uses `_normalise_lines`.
  The three are now stated separately, with the note that a residual read off
  one does not transfer.

- docs/guard-inventory.md's pointer restated the "shell or config TEXT" framing
  the record exists to reject. It now says what the record says: an artifact
  with a grammar the predicate does not implement.

- Rider 1 stated vite's DEFAULT_CONFIG_FILES ordering unbound to a version. The
  ordering belongs to a release and expires with one, so the record cites the
  guard-inventory row rather than keeping a second copy, and that row now dates
  the reading and names the release web/package-lock.json pins.

Refs #901, #891, #887, #881, #885

Co-Authored-By: Claude Fable 5.1 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_015QqCpYFsKgnAnx6jVwrKiV
2026-09-05 15:59:16 +02:00
timothyandClaude Fable 5.1 17c65005f5 docs(901): the hook pin is a pin WITHIN a selection, and the selection has a measured escape
The record's own rule ends: a pin also declares its NORMALISATION and what the
normalisation cannot see, because "pinned whole" invites a reader to assume
byte equality. The `mechanics:` field did that for the image-build pin (it
names `_normalise_lines` and what it drops) and not for the hook pin, which it
described only as pinning two lines byte for byte.

The comparison at scripts/tests/test_hook_fire_log.py:161-167 is over a
SELECTED set — lines containing the literal `ETV_HOOK_FIRE_LIB` that are not
comment-led — so byte-identity holds within the selection and says nothing
about a writer of that variable spelled without the literal.

MEASURED 2026-09-05 on this branch against `.claude/hooks/decisions-guard.sh`:
appending

    eval "$(printf %s%s=/dev/null ETV_HOOK_FIRE _LIB)"

after the canonical assignment leaves `instrumentation_faults(text,
'decisions-guard')` == `[]`, byte-identical to the unmutated baseline `[]`,
while running those two lines under bash prints `final=/dev/null` — the sink is
repointed and the checker is silent. A false GREEN, which is the failure
direction this record exists to argue about.

The residual is #891 code and is not introduced here; no code changes. What
changes is that a record citing this file as one of its two worked pins now
states the residual instead of implying byte equality over the file.

Refs #901, #891

Co-Authored-By: Claude Fable 5.1 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_015QqCpYFsKgnAnx6jVwrKiV
2026-09-05 15:58:48 +02:00
timothyandClaude Fable 5.1 32e8578438 docs(901): the one line a guard author reads names two of the three rules
The record is a rule about the SHAPE of a guard's predicate — the third member
of the set docs/guard-inventory.md:15-16 tells a guard author to read before
editing a guard or adding a row — and that pointer named only
`guard-derives-population-from-source` and `guard-ships-with-mutation-proof`.
Before this commit, `grep -rln guard-pins-the-artifact-not-a-shape docs/`
outside the record and the generated catalog returned docs/README.md alone, so
the record was reachable from the task-signal map and by topic but not from the
inventory a guard author already has open.

That is the reachability failure the record itself names: its body says
`docs/guard-inventory.md` carries its precedent per incident, findable only
from inside one. A record about topic-resolvability that is missing from the
entry point of its own topic reproduces it.

Refs #901

Co-Authored-By: Claude Fable 5.1 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_015QqCpYFsKgnAnx6jVwrKiV
2026-09-05 15:58:48 +02:00
timothyandClaude Fable 5.1 78593ace9f docs(901): a quotation that resolves to nothing, and a universal over three pins that holds for two
Two review findings, both the class this record is about: prose that claims
more than the artifact says.

The neighbour-record citation presented a paraphrase in quotation marks.
`testing.guard-derives-population-from-source` line 96-97 reads "when the
authoritative source is missing, the answer is to create one, never to
approximate it with a predicate over text"; the record quoted it without "the
answer is to" and without the second "to", so a fixed-string lookup of the
quoted span found nothing anywhere under docs/ — #812's second defect, which
`testing.mutation-claims-are-executed` names explicitly. The quote marks are
gone rather than repaired: the source sentence spans a line break, so any
single-line verbatim quotation of it would still not resolve by grep, and an
open paraphrase claims only what it is.

The `mechanics:` field said the image-build pins fail with a message naming
the constant to update. Measured against
scripts/tests/test_image_build_delegates_the_spa_suite.py: PINNED_STAGE_COMMANDS
(line 589) and PINNED_VITE_CONFIG (line 798) name themselves,
PINNED_PACKAGE_SCRIPTS (lines 757-763) does not — it names the FILE and prints
both maps. 423bf94e7 corrected this same sentence for the hook half after
verifying it and left the image-build half an unverified universal.

The first replacement drafted here read "all four faults ask for the reason in
the same commit", which is false a second way: the hook-preamble fault
(test_hook_fire_log.py lines 162-167) asks for no reason at all, it reports
got={mentions}. The shipped sentence is scoped to the three pins whose fault
messages were read.

Refs #901

Co-Authored-By: Claude Fable 5.1 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_015QqCpYFsKgnAnx6jVwrKiV
2026-09-05 15:58:48 +02:00
timothyandClaude Fable 5.1 4c2ceccaf7 docs(901): carry both rejected alternatives in the rule, not only in the body
The catalog renders `rule:` alone, so a reader resolving this by topic saw the two
decisions without the alternatives they rejected — which is what stops a rejected
option being re-proposed on plausibility.

Decisions-Edit: yes
Co-Authored-By: Claude Fable 5.1 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_015QqCpYFsKgnAnx6jVwrKiV
2026-09-05 15:58:48 +02:00
timothyandClaude Fable 5.1 87d90f330c docs(901): the hook-preamble fault does not name a constant — correct the mechanics claim
The record asserted both worked pins fail with a message naming the constant to update
and asking for a reason. True of `test_image_build_delegates_the_spa_suite.py`'s three
pins; false of `test_hook_fire_log.py`, whose byte-identity fault reports the divergent
`mentions` list and names no constant. Verified against both files rather than inferred
from the neighbouring one.

Decisions-Edit: yes
Co-Authored-By: Claude Fable 5.1 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_015QqCpYFsKgnAnx6jVwrKiV
2026-09-05 15:58:48 +02:00
timothyandClaude Fable 5.1 0f4552d093 docs(901): pin the artifact whole is the DEFAULT for a predicate over a grammar it does not implement
Two predicates over artifacts with a real grammar were each defeated by successive
spellings and withdrawn in favour of pinning the artifact whole: #887's shell parse
(nine defects from one mechanism, then seven more against a partial match of
web/vite.config.ts) and #891's lexical rule over the hook preamble (five spellings).
Both incidents carry a record; neither is resolvable by topic before round three, which
is what this class-level record adds.

Decides the two questions #901 left open:

- DEFAULT, not remedy. A shape-matcher's failure is a false GREEN, so the defeat that
  would trigger a remedy policy is found by a reviewer or an incident and never by the
  guard: "not defeated yet" measures who has looked. Rejected: write the matcher and
  pin after the first defeat — it also understates its bill, since a withdrawal costs
  the rounds spent AND the proofs calibrated against the narrow clause.
- The exception argument carries FOUR things: the grammar and its parser; the input
  space as a closed enumeration with the reason it is closed; the fail direction
  measured as a declared, executed mutation; and what it buys priced in a cost the pin
  charges. Rejected: a numeric "survives N spellings" bar (measures the reviewer's
  imagination) and a reviewer sign-off bar (depends on the signal that arrives late).

Records both riders (a pin assumes it pins the artifact that still DECIDES; widening a
clause turns a survived-clause canary into a tautology) and states the threshold as the
moment the NEXT spelling is found by the reviewer rather than the author.

docs/README.md's guard-convention task-signal row points at the record; catalog
regenerated; 59 prose lines, under the 60-line advisory ceiling.

fixes #901

Co-Authored-By: Claude Fable 5.1 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_015QqCpYFsKgnAnx6jVwrKiV
2026-09-05 15:58:48 +02:00
timothyandClaude Fable 5.1 c30847204c fix(885): a head-authored run may hold no stored secret, so the PR route reads the registry and the status API anonymously (#919)
Build ErsatzTV Image / CI toolchain image resolves (push) Successful in 5s
Build ErsatzTV Image / Build & test (.NET) (push) Successful in 19s
Build ErsatzTV Image / Delimiter ban (release path) (push) Successful in 24s
Build ErsatzTV Image / EF migration integrity (SQLite + MySql) (push) Successful in 13s
Build ErsatzTV Image / Functional E2E (curl + UI contracts) (push) Successful in 11s
Build ErsatzTV Image / API docs in sync (OpenAPI + endpoint index) (push) Skipped
Build ErsatzTV Image / Formatting (changed .cs conform to .editorconfig) (push) Skipped
Build ErsatzTV Image / Build & push image (amd64) (push) Successful in 4m24s
fixes #885
refs #909

Decisions-Edit: yes
Co-Authored-By: Claude Fable 5.1 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_015QqCpYFsKgnAnx6jVwrKiV
2026-09-05 13:56:59 +00:00
timothyandClaude Fable 5.1 61ed6a7955 test(885): exercise REGISTRY_PASSWORD at both if: levels, re-confirm the layer measurement
Build ErsatzTV Image / CI toolchain image resolves (pull_request) Successful in 6s
PR Gates / CI image pin matches docker/ci (pull_request) Successful in 16s
Build ErsatzTV Image / Delimiter ban (release path) (pull_request) Successful in 20s
PR Gates / decisions lifecycle (pull_request) Successful in 19s
PR Gates / Docs update reminder (pull_request) Successful in 23s
PR Gates / Fix proofs (Proves trailers) (pull_request) Successful in 14s
Review verdict / Set review-verdict status (pull_request_target) Successful in 15s
review-verdict/h10 Review-verdict: MERGEABLE @ 61ed6a7 (base: main)
Build ErsatzTV Image / Build & test (.NET) (pull_request) Successful in 9m3s
Build ErsatzTV Image / EF migration integrity (SQLite + MySql) (pull_request) Successful in 6m14s
Build ErsatzTV Image / Build & push image (amd64) (pull_request) Skipped
PR Gates / Script lint and tests (ruff + pytest) (pull_request) Successful in 19m35s
Build ErsatzTV Image / Functional E2E (curl + UI contracts) (pull_request) Successful in 6m8s
Build ErsatzTV Image / API docs in sync (OpenAPI + endpoint index) (pull_request) Successful in 7s
Build ErsatzTV Image / Formatting (changed .cs conform to .editorconfig) (pull_request) Successful in 5s
Round-nine's bare-if fix table paired each secret name with only one level
(job for REGISTRY_PASSWORD, step for RENOVATE_TOKEN), so the exact
REGISTRY_PASSWORD-at-step-level and RENOVATE_TOKEN-at-job-level cases the
finding named were never driven. All four combinations now run.

The decision record's anonymous-layer-download closure read as reporting a
past run without saying who ran it. Re-measured directly this session
(2026-09-05, no stored credential): anonymous token -> pinned manifest's
first layer -> 200/32991280 bytes, same GET with no token -> 401. Record
updated to say the leg was re-confirmed, not merely "measured...since".

Co-Authored-By: Claude Fable 5.1 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_015QqCpYFsKgnAnx6jVwrKiV
2026-09-05 15:15:44 +02:00
timothyandClaude Fable 5.1 45cada07e4 test(885): the predecessor read is asserted on BOTH condition rows, not one
The block claimed the ordinary-string read — `secret_refs`, how `secret_name_counts` routed
an `if:` value before `condition_refs` — "is asserted empty on every row", while asserting it
on the job-level condition only. The step-level row's own string went unchecked, so a
predecessor that happened to see it would have left the row proving nothing. Both rows now
run the same three assertions from one loop.

Co-Authored-By: Claude Fable 5.1 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_015QqCpYFsKgnAnx6jVwrKiV
2026-09-05 15:15:43 +02:00
timothyandClaude Fable 5.1 d793342f50 docs(885): a condition NAMES a secret without exporting it, and is faulted for naming it
The `if:` clause reads the one site whose reference the evaluator resolves without
materialising anything into the job environment, so a reader can reasonably ask why it
faults. Both the function and the record now say: the predicate is "names a stored secret",
never "exports one" — on the head-authored route the contributor picks the comparison, which
makes a condition an oracle over the value, and a predicate about exposure would have to
model what each site does with its reference and give up the structure-blindness that saw
`toolchain-preflight`'s step `env:` when a `container:`-shaped predicate did not.

Decisions-Edit: yes
Co-Authored-By: Claude Fable 5.1 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_015QqCpYFsKgnAnx6jVwrKiV
2026-09-05 15:15:43 +02:00
timothyandClaude Fable 5.1 786d1c3c4b docs(885): an unmeasured failure TIME, replaced by the structural fact it stood for
`scripts/ci-toolchain-image-resolves.sh` and `docs/ci-cd.md` both stated that the #772
container jobs "died after 1-2s", and the header used the same number to argue the preflight
needs no `needs:` gate. Nobody measured it, and it cannot be measured from a working session
without reproducing a deleted-tag incident. What the number stood for is structural and IS
known: a container job that cannot pull its image fails AT the pull, before it runs a step,
so it wastes no work waiting to be told and the argument against serialising the five jobs
survives intact.

Co-Authored-By: Claude Fable 5.1 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_015QqCpYFsKgnAnx6jVwrKiV
2026-09-05 15:15:43 +02:00
timothyandClaude Fable 5.1 47a5582443 docs(885): the record names the spelling the scoping costs, and the layer leg is measured
Two corrections to `ci.pr-route-carries-no-stored-credential`, both about claims that read
as checked and were not.

The `rule:` said the detector reads every spelling "only inside a `${{ }}` span", and the
body enumerated `secrets: inherit` as the ONE shape left uncovered. An unwrapped `if:` is a
second, and it is a shape this repo writes: both now name it, and say the value of an `if:`
is read whole.

`mechanics:` listed an anonymous LAYER download among two things the daemon probe did not
exercise. Measured 2026-09-05 from a workstation holding no registry credential: the
anonymous pull token reads the pinned manifest's first layer
`sha256:179c68a720750ab4d354f6b55c0a9f551d4fd7bde93606dd0be79ba16493a39e` -> HTTP 200,
32991280 bytes, and the same GET with no token -> 401. act_runner's own pull call path is
the one leg still unexercised.

Co-Authored-By: Claude Fable 5.1 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_015QqCpYFsKgnAnx6jVwrKiV
2026-09-05 15:15:43 +02:00
timothyandClaude Fable 5.1 f075d1417c fix(885): an if: is an expression unwrapped, so the scoped detector reads that key whole
The `${{ }}` span scoping added in a6225e4ee was correct about prose and wrong about one
real spelling: `if:` is the only key the expression grammar lets omit the delimiters in, so
`if: secrets.REGISTRY_PASSWORD != ''` named a stored secret in a document holding no `${{`
at all, and the collector reported it clean. Measured on the previous head e35e1b772:
`secret_refs("secrets.REGISTRY_PASSWORD != ''")` -> `[]`, and the same string as a
job-level or step-level `if:` on a synthetic `pull_request` job -> `stored_secret_faults(...)
== []`. That an unwrapped condition is evaluated is not inferred — `docker-build.yml`'s own
`build` job carries `if: github.event_name != 'pull_request'` bare, and `PR_EXCLUDING_IFS`
pins that exact string.

`condition_refs` reads an `if:` value as one span with the delimiters neutralised to a
SPACE (deleting them collapses `${{ secrets.A }}${{ secrets.B }}` into the single identifier
`secrets.Asecrets`, losing a reference), and `secret_name_counts` routes the value there
instead of onto the stack, so a wrapped condition still counts once. Everywhere else the
scoping stands and the English `# We pass no secrets. Then …` still costs nothing.

Co-Authored-By: Claude Fable 5.1 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_015QqCpYFsKgnAnx6jVwrKiV
2026-09-05 15:15:43 +02:00
timothyandClaude Fable 5.1 d4c00f7567 docs(885): the handover clause states its own unprobed reachability, where the rule is read
The code banner and the test docstring say that whether act_runner on this
instance resolves `workflow_call` + `secrets: inherit` was not probed, and why
that is acceptable — it governs reachability today, not the guard's silence. The
record stated the clause without that bound, so a reader who meets the rule
through the catalog rather than through the file met a confidence claim the
source deliberately does not make.

Refs #885
Decisions-Edit: yes

Co-Authored-By: Claude Fable 5.1 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_015QqCpYFsKgnAnx6jVwrKiV
2026-09-05 15:15:43 +02:00
timothyandClaude Fable 5.1 c325cd6ee4 fix(885): a handover written in the YAML grammar names no secret, so the guard reads the KEY too
The detector was exhaustive over the `${{ }}` expression grammar and blind to
`jobs.<id>.secrets: inherit` on a `uses:` job, which passes the caller's whole
store to the called workflow while naming nothing. `secret_refs` reads only
inside expression spans — correctly, since outside one `secrets.` is a full stop
— and `inherit` is a plain scalar, so such a job was put in the derived
population by `pull_request_jobs`, walked, and reported CLEAN. Measured against
the predecessor:

  stored_secret_faults('synthetic.yml', {True: {'pull_request': None},
    'jobs': {'reused': {'uses': './.gitea/workflows/reusable.yml',
                        'secrets': 'inherit'}}})            -> []
  ... the same job with secrets: {TOK: '${{ secrets.RENOVATE_TOKEN }}'} -> 1 fault

so the miss was specific to the VALUE SHAPE, not the key. That is the failure the
done-condition names — a new job joining the population unprotected without
reddening anything — in a guard whose stated selling point is exhaustiveness over
the grammar and no exemption list.

`opaque_secret_handovers` now faults a `secrets:` key whose value is not a mapping
of names, under the existing `secrets.*` whole-context sentinel, and both fault
sites read through one `held_secret_names` so the workflow scope and the job
subtree cannot drift on which references are forgiven. The test is on the value
shape and not on the word `inherit`, for the reason the residue counter is not a
match on `toJSON`: any non-mapping value hands over a set the guard cannot
enumerate, a spelling act_runner grows later included.

Both halves of the predecessor measurement are re-derived every run rather than
left as prose: the new test asserts `secret_names(job) - INJECTED_SECRETS` — the
collector verbatim as it read before this clause — empty on the same fixtures it
asserts the fault on, and asserts the job is in the population. Reverting
`held_secret_names` to that expression reddens that test and only that test
(measured: 1 failed, 18 passed).

The clause reads the DOCUMENT only and the text-versus-walk cross-check cannot
cover it — there is no expression for its half to match, which is a stronger
reason than the shared-blind-spot one the cross-check already discloses. Said at
the definition, in the cross-check's "STRUCTURALLY CANNOT REPORT" paragraph, and
in the record, rather than left to be discovered; it does not redden the
cross-check either, since the clause feeds the fault collector and not
`secret_name_counts`.

Whether Gitea 1.27.1 / act_runner resolves `workflow_call` + `secrets: inherit`
on this instance was NOT probed — that affects reachability today, not the
guard's silence, and the direction is the one the spelling rows already take.
No tracked workflow uses a job-level `uses:`, so nothing reddens.

Refs #885
Decisions-Edit: yes

Co-Authored-By: Claude Fable 5.1 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_015QqCpYFsKgnAnx6jVwrKiV
2026-09-05 15:15:43 +02:00
timothyandClaude Fable 5.1 fe05526ef4 fix(885): the tag rule this branch added is dated where it is asserted
`release.main-direct-push-disabled` was edited on this branch to note the new `v*`
tag protection, and picked up two of the defects the round was hunting elsewhere.

Its `rule:` said the `renovate` bot "can no longer push a tag that publishes
`:prod`" as settled fact, while `release.tag-protection-v-star` records that exact
claim as NOT VERIFIED and `docs/ci-cd.md` was already corrected to EXPECTED,
UNVERIFIED. Only the `timothy` credential exists in a working session, so neither a
real release cut nor a refused bot push has been exercised; all three now agree on
confidence.

Its `mechanics:` still read "`GET .../tag_protections` returns `[]`" in the present
tense — the one fact this branch changed, and the one site an otherwise complete
sweep left behind. Read back live today the endpoint returns one rule, `v*`
whitelisted to `timothy`. The clause is now past tense and bound to its probe date,
with the current state named.

Decisions-Edit: yes
Co-Authored-By: Claude Fable 5.1 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_015QqCpYFsKgnAnx6jVwrKiV
2026-09-05 15:15:43 +02:00
timothyandClaude Fable 5.1 fa06da21f3 fix(885): the guard states both invariants, and the second one is executed
The two `docs/guard-inventory.md` rows and the module docstring described
`test_workflow_persist_credentials.py` as the `actions/checkout` guard only. The
deferral to #909 rested on `docs/guard-inventory.md` being held by the session
working #881; that issue is closed and its PR is the commit this branch is rebased
onto, so the file is free and the edit belongs here under docs-update-is-part-of-done.

`MUTATIONS` keys at most one declared clause mutation per guard FILE
(`test_the_manifest_covers_exactly_the_MUTATION_rows` asserts `len(MUTATIONS) ==
len(declared)`), and the grading row's proof-ref column is compared against it, so
the route invariant cannot take a second `MUTATIONS` row. It takes a `CLAIMS` entry
instead — the population #881 widened this file to carry — bound to the inventory
sentence that states it: deleting `build`'s `if: github.event_name != 'pull_request'`
from the shipped `docker-build.yml` is applied to a sandbox copy every run and the
named proof is required to redden with the collector's own wording.

That grows the `CLAIMS` population from three entries to four, which invalidates the
cost span `testing.mutation-claims-are-executed` measured over three. Re-taking it
here produced 54.3s/149.5s, 81.6s/78.7s and 114.3s/84.2s across three A/B pairs with
other builds on the host — two inverted, so the load dominates the signal. The record
now says the span is a lower bound and that a re-measurement is owed on a quiet
machine, rather than carrying a scaled or invented number.

Decisions-Edit: yes
Co-Authored-By: Claude Fable 5.1 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_015QqCpYFsKgnAnx6jVwrKiV
2026-09-05 15:15:43 +02:00
timothyandClaude Fable 5.1 e656583247 style(885): the tag-protection paragraph reads as unverified in its opening clause too
"unaffected for the release operator" asserted the outcome the rest of the
paragraph then marks unverified. Both places now say what is intended and what is
measured, and the blockquote is rewrapped.

Co-Authored-By: Claude Fable 5.1 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_015QqCpYFsKgnAnx6jVwrKiV
2026-09-05 15:15:43 +02:00
timothyandClaude Fable 5.1 6713b82042 style(885): reflow the paragraph rather than leaving a stub line mid-sentence
Co-Authored-By: Claude Fable 5.1 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_015QqCpYFsKgnAnx6jVwrKiV
2026-09-05 15:15:43 +02:00
timothyandClaude Fable 5.1 d137d70bf2 style(885): rewrap the header comment the previous commit ran past 100 columns
Co-Authored-By: Claude Fable 5.1 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_015QqCpYFsKgnAnx6jVwrKiV
2026-09-05 15:15:43 +02:00