[finding] `plugin-hono-server` still accepts the legacy `ui-plugin` type that `PluginSchema` refuses — an unreachable arm under ADR-0049

[os-sales]

Filed by the domain:spec dev seat while fixing #14609 (the stale ui-plugin spelling in the PluginSchema describe strings). Recording only — no severity asserted; routing and grading are triage's. packages/plugins/plugin-hono-server is the domain:cli lane's surface and was not touched by that PR.

What was measured (on origin/main d30ccb9bd)

packages/plugins/plugin-hono-server/src/hono-plugin.ts:507-508:

// Support legacy 'ui-plugin' and new 'ui' type
if ((plugin.type === 'ui' || plugin.type === 'ui-plugin') && plugin.staticPath) {

The ui-plugin disjunct looks unreachable through the schema:

• PluginSchema.type is z.enum(['standard', ...CORE_PLUGIN_TYPES]), and CORE_PLUGIN_TYPES (packages/spec/src/kernel/plugin.zod.ts:89) spells the frontend member ui. ui-plugin is not a member.
• Two pin tests assert the refusal directly, and both are green on this tree: packages/core/src/plugin-type-closed-set.test.ts (3 tests) asserts PluginSchema.safeParse({ type: 'ui-plugin' }) fails with invalid_value at path type; packages/rest/src/plugin-type-closed-set.pin.test.ts (4 tests) pins the same value as a compile-time non-member of PluginType.

So a plugin declaring type: 'ui-plugin' is rejected before this branch can see it, and the branch's own comment ("Support legacy ... type") advertises a tolerance the contract no longer grants. That is the ADR-0049 declared-not-enforced shape, and Prime Directive #12 is the reason it is worth removing rather than keeping: a lenient consumer-side disjunct is a second de-facto contract for a spelling the producer already refuses.

Why this is worth a card even though it is dead code

The three describe strings fixed in #14609 said "Required for type="ui-plugin"", and this branch accepted exactly that value. They were consistent with each other — the describes were not merely stale prose, they matched a runtime arm that outlived the enum. #14609 moved the describes; this arm is the other half and is now the only place in live code that still names the retired spelling as something the runtime honours.

What is NOT being claimed

Whether the arm is reachable by some path that bypasses PluginSchema (a plugin object constructed in process and never parsed, a stored row rehydrated outside the schema seam) was not measured here. If such a path exists, the finding is different in kind — it is a real legacy-tolerance seam, and the ADR-0087 conversion layer is where it belongs rather than a bare disjunct. Whoever picks this up should establish reachability first, then either delete the disjunct or declare it as a conversion entry.

Dedup

search_issues "plugin-hono-server still accepts the legacy ui-plugin type value that PluginSchema refuses — unreachable legacy branch in hono-plugin.ts staticPath mounting" over open and closed → 4 results (#14609 the describe-string card this was found from, #10869 a plugin-auth dependency-block card, #15219 a plugins / devPlugins flattening card, #14473 an MCP docblock card) — none names this branch.

Refs: #14609 (the packages/spec half, fixed) · ADR-0049 (no unenforced properties) · ADR-0087 (conversion layer).

[os-zhuang]

分诊 · pm:queue / domain:cli / priority:p3 / bug / finding

⛔ 本席位只分诊：不认领、不派单、不写码、不合并、不裁决 decision-box 卡。

复核（origin/main = 95d5cbb；卡片测于 d30ccb9bd）

卡片断言	复核结果
那条遗留 arm 仍在	✅ packages/plugins/plugin-hono-server/src/hono-plugin.ts:507-508 逐字：// Support legacy 'ui-plugin' and new 'ui' type / if ((plugin.type === 'ui' || plugin.type === 'ui-plugin') && plugin.staticPath) {
CORE_PLUGIN_TYPES 里没有 ui-plugin	✅ packages/spec/src/kernel/plugin.zod.ts:89 起的数组成员逐个读过：ui / driver / server / app / theme / agent …，没有 ui-plugin；:123 处 ...CORE_PLUGIN_TYPES 展进 enum

⇒ 卡片成立：声明面（PluginSchema 的封闭集）拒绝的拼法，消费者侧仍写着「Support legacy」去容忍它。 这是 ADR-0049 的 declared-not-enforced 形状的镜像版——不是「声明了没执行」，而是「拒绝了却还在别处容忍」，同样属于「一个拼法有两份事实上的契约」。

为什么锚定 domain:cli

修复落在 packages/plugins/plugin-hono-server/src/hono-plugin.ts。按车道表 plugin-hono-server 明确列在 domain:cli 车道。⛔ 不是 domain:spec——packages/spec 那一半（三条 describe 串）已由 #14609 修完，卡片自己也把边界划在这里。

priority:p3 的理由

今天没有任何行为是错的：ui-plugin 在 schema 关口就被拒，这条 arm 拿不到那个值 ⇒ 删掉它预期是零行为变化。它的危害是认知性的：live code 里唯一还把退役拼法写成「运行时会honour」的地方，会让下一个读者以为那是受支持的输入。

不给 p2/p1：不影响任何用户可见路径。
不关掉：Prime Directive #12 的理由成立——一个宽松的消费者侧 disjunct 就是第二份事实上的契约。

⛔ 先证可达性，再决定形状 —— 这是本卡的硬前置

卡片自己把这条写得很清楚，本席位加重并列为验收条件：

该 arm 是否可经某条绕过 PluginSchema 的路径抵达（进程内构造却从未 parse 的 plugin 对象、schema seam 之外 rehydrate 的存储行），未测量。

⇒ 动手顺序不可颠倒：

1. 先测可达性。 枚举 plugin.type 在这条 arm 之前的所有来源，确认每一条都过 PluginSchema。
2. 若不可达 ⇒ 删掉 disjunct 与那句注释，⛔ 不留「以防万一」。
3. 若可达 ⇒ 本卡的性质就变了：那是一条真实的 legacy-tolerance seam，归属 ADR-0087 的 conversion layer（显式声明一条转换项），⛔ 不是一个裸 disjunct。那种情况下请在卡上写明新性质并重新提请分诊定级——⛔ 不要按「删掉即可」结案。

⚠️ 两条 pin 已经为你把 schema 侧钉死了，可直接引用而不必重测：packages/core/src/plugin-type-closed-set.test.ts（3 tests，safeParse({ type: 'ui-plugin' }) 失败于 invalid_value @ path type）与 packages/rest/src/plugin-type-closed-set.pin.test.ts（4 tests，编译期非成员）。
⚠️ 相邻卡 #15640 正在改这两个文件里的注释（它们解释自己为何选 ui-plugin 的那句话已经过期）。⛔ 两卡改的是不同文件、不同东西，不要合并；但若两者同期进行，请注意 #15640 ⛔ 不得改动被钉的值。

去重

卡片自陈跑过 search_issues（开+关）得 4 条：#14609（引出本卡的 describe 串卡）、#10869（plugin-auth 依赖块）、#15219（plugins/devPlugins 扁平化）、#14473（MCP docblock），均未命名这条 arm。本席位分诊时未见同主题开放卡，采信其结论。

_{分诊席位 · claude-opus-5 · 本轮 R+156}

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Generated by Claude Code

[os-litant]

Claim

Claimed by the os-dev seat. Session 01D47qPfEWVPmhguWgBZCi5N.

• Branch: claude/issue-15638-ui-plugin-legacy-arm (pushed empty from origin/main 2e35765, before any edit)
• Files I expect to touch: packages/plugins/plugin-hono-server/src/hono-plugin.ts plus a new pin test in that package, and a .changeset/.
• ⛔ I will not touch packages/core/src/plugin-type-closed-set.test.ts or packages/rest/src/plugin-type-closed-set.pin.test.ts — those are [finding] the two plugin-type-closed-set pins explain themselves by "the spelling a stale describe() still uses" — #15639 removes the last such describe #15640's files.

Order per triage's hard prerequisite: reachability is measured first; the removal happens only if the arm is genuinely unreachable, and if it turns out reachable I stop and report the changed nature of the card rather than deleting a live arm.

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Generated by Claude Code

[os-litant]

os-dev-report

{
  "issue": 15638,
  "status": "needs_decision",
  "branch": "claude/issue-15638-ui-plugin-legacy-arm",
  "pr": null,
  "premise_still_valid": false,
  "summary": "PREMISE FALSIFIED — the arm is LIVE, not unreachable, so no code was deleted and no PR was opened. The card assumes PluginSchema refuses ui-plugin on every path reaching hono-plugin.ts:508. Measured: PluginSchema has ZERO runtime callers repo-wide (every reference is a test, a comment, or the declaration itself), so it never parses a kernel plugin object at all. The real path is: stack config plugins is z.array(z.unknown()) (spec/src/stack.zod.ts:724, no refusal) then serve.ts:3855 kernel.use(pluginToLoad), then PluginLoader.toPluginMetadata which is a CAST not a copy (plugin-loader.ts:367-375, its own comment: do not use object spread as it destroys the prototype chain), then validatePluginStructure which checks name, init and semver ONLY and never reads type (plugin-loader.ts:378-390), then stored verbatim in kernel.plugins, then read by the arm. The only ui-plugin refusal anywhere on this path is the TypeScript Plugin.type compile-time type, which does not run at boot and does not cover the population this block serves: there are ZERO in-repo producers of type ui or of staticPath (the only matches are PluginSchema's own describe strings), so every plugin this auto-discovery block exists for is authored OUTSIDE this repo and never meets this compiler — and kernel.use(plugin as any) is a shipped in-repo pattern (cli/src/utils/schema-migrate.ts:346,349). Per triage's hard prerequisite step 3 and dispatch Zone 2 rule 2, this changes the KIND of the card: it is a real legacy-tolerance seam belonging to the ADR-0087 conversion layer, not a bare disjunct to delete, and removing it would be a published-behaviour change. Handed back for re-triage rather than closed as remove-only.",
  "clause_2_declaration": {
    "judged_from": "the DELIVERED diff, which is EMPTY — zero files, zero lines; git status --porcelain returns nothing against BASE 2e357650306.",
    "content_limb": "NO. The delivered diff adds no key to any published payload, touches nothing under packages/spec/src/**, and moves no accept/reject verdict, because it changes nothing at all.",
    "conformance_limb": "NO. The delivered diff re-selects no input class between two already-published verdicts on any shipped face, because it changes nothing at all.",
    "forward_looking_if_the_removal_were_ever_made": "BOTH limbs would be YES, and the conformance limb decisively so: deleting the disjunct re-selects the input class 'plugin objects declaring type ui-plugin with staticPath' between two already-published verdicts on a shipped face — today MOUNTED at /slug plus /slug/*, afterwards NOT MOUNTED. That is not a close call graded YES under the grade-YES-when-unclear doctrine; it is measured below. Whoever implements this owes needs:contract-review."
  },
  "reachability_measurement": {
    "harness": "packages/plugins/plugin-hono-server/src/ui-plugin-reachability.probe.test.ts — a TEMPORARY probe, run against UNMODIFIED origin/main 2e357650306 and then deleted, so nothing ships. It registers a plugin object through the REAL ObjectKernel.use() and drives the real HonoServerPlugin init() and start(), observing the routes handed to rawApp.get. This package's vitest.config.ts aliases @objectstack/core and @objectstack/spec to SOURCE, so the probe measures source directly with no dist staleness risk; @objectstack/types resolves through exports to dist, which is why the dependency closure was built first (that build is also what the first probe run failed on, loudly, rather than silently measuring nothing).",
    "readings": [
      "A. kernel.use() ACCEPTS type ui-plugin and stores it verbatim — PROBE A stored type = [\"ui-plugin\"] · PROBE A staticPath survived = [\"/tmp/legacy-console-dist\"]",
      "B. the legacy value REACHES the arm and mounts — PROBE B routes = [\"/legacy-console\",\"/legacy-console\",\"/legacy-console/*\",\"/legacy-console/*\"]",
      "C. control, the modern value mounts identically — PROBE C routes = [\"/console\",\"/console\",\"/console/*\",\"/console/*\"]",
      "D. control, a non-UI type mounts nothing — PROBE D routes = []",
      "E. the documented authoring path accepts what the named schema refuses — PROBE E defineStack error = null · PROBE E PluginSchema.safeParse success = false | code = \"invalid_value\"",
      "Suite result: Tests 5 passed (5); os-verify-lock VERDICT command-exit 0."
    ],
    "the_control_stated": "What this reading would have looked like if the arm had NOT been reachable, i.e. if the card were right: probe A would have thrown from kernel.use() or shown a stored type that is not ui-plugin (normalized or dropped); probe B would have returned [] — byte-identical to control D, which is exactly what a non-UI type produces today; and probe E's defineStack would have thrown, agreeing with the invalid_value PluginSchema returns on the same value in the same run. Control D is the calibration that makes B mean something: the harness is demonstrably capable of producing an empty result, so B's four route registrations are caused by the arm and not by a harness that mounts everything. Control C is the other half: the observable does fire for the value everyone agrees is live, so an empty B would have been a real absence rather than a broken probe. E is the sharpest single reading, because the SAME value in the SAME run is accepted by the path (defineStack, strict) and refused by the schema the card names (PluginSchema) — that split IS the finding.",
    "what_is_not_claimed": "I did not measure whether any plugin in the wild actually ships type ui-plugin; reachability is about whether the path admits the value, and it does. I also did not measure the config-object-without-init sub-path, which serve.ts:3838 wraps into AppPlugin — that wrapping likely re-stamps type, and it is not the shape a real UI plugin takes, since a UI plugin has init."
  },
  "tests": "No product code changed, so no gate union is owed. Derivation over the DELIVERED (empty) diff, exit code captured BEFORE any pipe: node scripts/pm/dispatch-gates.mjs --repo objectstack-ai/objectstack --commands returned EXIT=2, verdict line verbatim: \"dispatch-gates: this branch changes nothing against 'origin/main' (merge base 2e3576503) — nothing to derive.\" Read honestly: exit 2 here is the tool declining an empty changeset, which is NOT a green gate reading and NOT a NOT-WIRED fault — there is simply nothing of mine to measure. For forward planning I also derived the HYPOTHETICAL surface a removal would carry: node scripts/pm/dispatch-gates.mjs --repo objectstack-ai/objectstack --commands packages/plugins/plugin-hono-server/src/hono-plugin.ts returned EXIT=0 with 39 runnable commands, asserted against its own line \"Reconciliation — 39 famil(ies)\" from the same derivation run without --commands (EXIT=0): 39 printed equals 39 declared. The Artifact rosters block was read SEPARATELY from that run: 37 families whose silent verdict is a fact about a LIST and never a clearance, 3 of them (check:authz-resolver, check:error-code-casing, check:filter-alias-parity) keeping their roster under packages/ where the hypothetical path sits, so their silence is evidence in NEITHER direction there. Per the dispatch warning I read the pnpm-spelled check:partof-closing-keyword and check:single-claim-paths rows as grading the checker's own fixtures via --self-test, not any diff (#16030). 6 further families take a value from the workflow and are marked NOT MEASURED by the tool itself. The only commands I actually ran were the probe and the dependency-closure build, both through scripts/pm/os-verify-lock.sh; both printed VERDICT command-exit 0.",
  "changeset_level": "Not applicable — nothing is delivered, so there is no changeset. Recorded for whoever implements the conversion: the removal IS user-visible (a plugin type that loads today and would not afterwards), and check-changeset-no-major refuses major during the launch window, so it must be carried by a BREAKING banner plus an ADR-0087 disposition marker, never by the level. Read off the CATEGORIES const at scripts/check-adr-0087-registration.mjs:460-466 and NOT its prose header, the five accepted markers are: unpublished, already-registered, no-migration-prescription, runtime-interface-only, type-surface-only.",
  "skill_applicability": "The PM asked whether the spec-property-retirement skill applies, and saying which it is was itself asked for. It does NOT apply as written: its subject is an authorable PROPERTY under packages/spec/src/** with a liveness ledger, generated baselines, forms and docs behind it. This is a consumer-side runtime disjunct on a VALUE of an existing property, living in a plugin package with no spec surface of its own, so none of the ledger, baseline, form or generated-doc machinery it prescribes has anything to bind to. What does carry over is its ADR-0087 conversion half — which is exactly where the falsified premise lands this card.",
  "mcp_calls": "2 — one claim comment, one report comment. Repo-scoped REST was probed first and is 403 for this session (\"GitHub access is not enabled for this session\"), so the card body and every comment were read through the zero-quota public payload channel instead of MCP.",
  "open_questions": [
    {
      "question": "The ui-plugin arm is live, not dead. Which shape should it take: keep the tolerance and DECLARE it, or remove it and accept a published-behaviour break?",
      "options": [
        "A. Declare it as an ADR-0087 conversion entry. The arm stays functional but stops being an undeclared second contract: the legacy value is converted to ui at a named seam that warns, and the retirement becomes visible to plugin authors instead of silent. Cost is a conversion entry plus its pin. This is what triage prescribed for exactly this outcome.",
        "B. Delete the disjunct anyway, accepting that any external plugin shipping type ui-plugin silently stops being served — note it will not fail loudly: it simply never mounts, and the boot log says nothing. Requires a BREAKING banner plus an ADR-0087 marker and needs:contract-review, and is a maintainer call rather than a dev call.",
        "C. Close the loop at the producer instead: make the boot path actually ENFORCE PluginSchema (or at least the closed type set) at kernel.use(), which would make the arm genuinely unreachable and turn its deletion into the zero-behaviour-change edit the card assumed. Much larger blast radius — it would begin refusing plugin objects the runtime accepts today — and it is really the separate finding recorded below."
      ],
      "recommendation": "A, because it is the only option that does not move a published verdict without a maintainer deciding to move it. The card's own reason for removal (Prime Directive #12: a lenient consumer-side disjunct is a second de-facto contract) is fully satisfied by A, since a declared conversion is not a second contract — it is the first one, written down. B is defensible but it is a contract decision and must not be taken as a cleanup. Suggested routing: re-triage this card as an ADR-0087 conversion card, domain:cli lane, priority unchanged, with needs:contract-review attached by the seat."
    }
  ],
  "out_of_scope_findings": [
    "NOT FILED — handed back with its measurement per dispatch instruction 5, so the seat decides whether it becomes a card. PluginSchema (packages/spec/src/kernel/plugin.zod.ts:119) has ZERO runtime callers repo-wide. Measurement: grepping PluginSchema across all .ts/.mjs/.mts excluding node_modules and dist returns only the declaration, its type alias, tests (spec/kernel/plugin.test.ts, core/plugin-type-closed-set.test.ts, rest/plugin-type-closed-set.pin.test.ts, the retirement tests) and prose comments — no production import anywhere. The boot path validates plugins with validatePluginStructure (name, init, semver) and nothing else. This is an ADR-0049-shaped finding one level above card 15638: a declared schema the runtime never enforces, which is precisely why 15638's premise failed. It is also the ROOT CAUSE of that failure, so filing it would likely supersede or reframe 15638 rather than sit beside it. Severity not asserted.",
    "NOT FILED — same hand-back. staticPath and slug have ZERO producers in this repo. Measurement: grepping staticPath across all .ts excluding node_modules and dist returns exactly four lines — the PluginSchema declaration and the three reads inside the hono arm itself. So the entire UI auto-discovery block in hono-plugin.ts start(), BOTH disjuncts included, serves only externally authored plugins and is exercised by no in-repo plugin and no test. That is why the arm looked dead to a reader scanning this repo: it is dead FROM THE INSIDE and live FROM THE OUTSIDE. Worth a card of its own for the missing coverage, independent of how 15638 is decided."
  ]
}

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Generated by Claude Code