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CONTRACT-P6.md 12.1 has carried "a ratchet recomputes the 184 in CI and asserts it only
ever falls" as an obligation since P6. The roadmap handed it to P6.5; the P6.5 line never
received it, and scripts/ci/ has never had anything that computes this number. ID-P7-7
gives it to P7 wave 0. This is it.
scripts/link_ratchet.py mechanises a6's hand experiment: partition the per-object output
of the single MobileGL target into SERVER / FRONTEND / SHARED, then compute
(SERVER undefined) - (SERVER defined) - (SHARED defined) intersect (FRONTEND defined),
which is the undefined-symbol list a real link of a server-only image would print. The
partition is an explicit table with a rationale per row, because it IS the module boundary
the build system does not have (SOURCE_FILES is one flat list; boundaries are P13's work).
An object matching no row is a hard failure, as is a build whose CMakeCache lacks the three
disaggregated options, or an empty role set - every way this gate could go green without
having measured anything is an explicit exit 2.
Measured on 78b7d6be: 186 symbols. The three backend buckets reproduce a6's hand-made
101 / 14 / 60 exactly, as do its per-object referrer and definer distributions
(UniformManager 90, VulkanRenderer 60, Managers 53, DirectGLES 51; TextureObject 59,
SamplerObject 30, BufferObject 18, FramebufferObject 16, PipeFill 9). Nothing from a6's
184 has been cleared; the +2 are both P6.5's:
Client::ClientSession::StartSpawned() - fork-per-session
GLState::ProgramArtifactsSchemaFingerprint() - archive v2 caps
The baseline stores the LIST, not a count (ID-P7-7): a count-only ratchet goes green on the
day one symbol is cleared and another added. --assert-monotone fails only on symbols absent
from the baseline and names each one's defining object and every referring object; symbols
that disappeared are reported with an instruction to re-baseline in the same commit, and
never fail.
The CI step goes in build-linux-split, not build-linux: build-linux takes the three options
from MOBILEGL_CI_DISAGGREGATED, which is ON only on feat/disaggregated and
codex/fix-github-ci, so on any other branch it builds a monolith and the gate would measure
a SERVER set with no transport half. The JSON is uploaded even when the gate fires.
Two findings for the integrator, both written up in the note:
- a6's four published bucket totals sum to 181 against its own headline of 184. These
buckets are a strict partition and always sum to the headline; the difference is in
a6's core bucket, which it listed selectively.
- 5 of the 14 "P3b/P4b" symbols are MG_Pipe slot-allocator and apply-thread plumbing
that sits under MG_Impl/Pipe/ by file location alone. P3b/P4b cannot clear them by
migrating Espryt functionality; they need P13's module move. That bucket's floor is
5, not 0, so the plan's 0.5-day Tier 1 estimate for "D12's 14 symbols" should be
re-cut against 9. All 7 symbols from that object carry a `# P13` annotation.
red-once (R-16) is recorded verbatim in the note. Worth knowing: the plan's own example
(SamplerObject::GetMinFilter) does NOT turn this gate red, because it is already in the
baseline - the ratchet reddens on new symbols, so a negative control has to pick one that
is not in the 186. A reach to GetBorderColorForm() from DirectGLES/Utils.cpp does, naming
the symbol, its definer and its referrer, exit 1; reverted and green again.
工作笔记（原 ~/w7/notes/）
这一层是 MGPipe 各阶段的工作笔记原件：包计划（BRIEF-*.md）、契约草稿、集成者逐条裁定
（INTEGRATOR-DECISIONS-*.md）、只读审计、普查、设备记录、包任务书（TASK-*.md）与阶段报告。
它们此前只存在于一台机器的 ~/w7/notes/ 下。上层那几份文档（ROADMAP.md、
CURRENT_STAGE_PROGRESS.md、MEASUREMENTS.md …）大量引用它们——裁定编号、审计行号、
逐门数字的出处几乎全在这里。一份引用了几百次、却只存在于本地未跟踪目录的记录，等于没有记录。
所以整体移进仓库。
路径映射
~/w7/notes/<phase>/<file>.md → docs/Disaggregated/notes/<phase>/<file>.md
上层文档里凡写作 ~/w7/notes/... 的 .md 引用，都按这条规则读。
移进来的是什么，没移的是什么
| 移进来了 | 全部 .md，415 份，约 11 MB，目录结构原样保留 |
| 没有移 | 脚本（.sh / .py）、运行日志（.log / .out / .err）、普查与门的结果数据（.json / .txt / .tsv）、补丁、APK 与 .idsig、nm 转储 |
没移的那些仍在 ~/w7/notes/ 与各构建树下。它们是证据数据而不是文档：体积大、随每次运行
重新产生、且多数只在产生它的那台机器上有意义（绝对路径、设备序列号、构建目录）。上层文档引用
它们时给的是路径，不是内容。
两个需要知道的例外
- P6 的包计划已提升为正式文档：原
~/w7/notes/p6/BRIEF-P6.md现在是../P6-SPAWN-PLAN.md，本目录不再保留副本，避免两份同源文档各自漂移。 契约草稿同理，见../P6-CONTRACT-DRAFT.md。 recovered/是从失败的 workflow 运行里捞回来的材料（wf1…wf5），与同名阶段目录 可能重复，保留是因为其中几份是当时唯一的完整版本。查阶段记录请先看阶段目录。
不受 citation lint 管
CI 的文档引用 lint 只吃 docs/Disaggregated/*.md（非递归，.github/workflows/test.yml），
本目录不在其中，这是有意的：这些笔记的 file:line 是写在各自当时的代码头上的，拿今天的
HEAD 去解析必然大面积失败，而那不是错误——那是它们作为历史记录的正确状态。要核对某份笔记的
引用，用它自己声明的那个 revision：
python3 scripts/check_doc_citations.py --rev <当时的头> docs/Disaggregated/notes/<phase>/<file>.md