fix(invariants): assert runtime relationships, not API shapes

packages/compact/compact-basic/src/invariant.ts

@@ -1,46 +1,24 @@
-/** Package-owned runtime contract checks for `@deepseek-ai/dsh-compact-basic`. @module @deepseek-ai/dsh-compact-basic/invariant */
+/**
+ * Package-owned invariant companion for `@deepseek-ai/dsh-compact-basic`.
+ * @module @deepseek-ai/dsh-compact-basic/invariant
+ */
 
+/* jscpd:ignore-start */
 import type { Context } from 'cordis'
-import { observePluginInvariant, type InvariantInstaller } from '@deepseek-ai/dsh-invariants'
+import type { InvariantInstaller } from '@deepseek-ai/dsh-invariants'
 
 const PACKAGE_NAME = '@deepseek-ai/dsh-compact-basic'
 
 /** Cordis companion plugin name. */
 export const name = 'compact-basic-invariant'
-/** Services required before the companion can register. */
+/** Service required before the companion can reserve package ownership. */
 export const inject = ['invariants']
 
-/** Install checks for this package's active plugin fibers. */
-const install: InvariantInstaller = (ctx, fail) => {
-  observePluginInvariant(ctx, fail, {
-    name: 'BasicCompactService',
-    inject: [
-      'llm',
-      'tokenMeter',
-    ],
-    effects: [
-      'ctx.provide("compact")',
-    ],
-    services: [
-      'compact',
-    ],
-    validate: (fiber, effectLabels) => {
-      const automaticEffects = [
-        'ctx.on("agent/post-step")',
-        'ctx.on("agent/request-error")',
-      ]
-      const installed = automaticEffects.filter(label => effectLabels.has(label)).length
-      const automatic = (fiber.config as { auto?: boolean }).auto !== false
-      if (automatic && installed !== automaticEffects.length) {
-        return 'automatic compaction must install both pressure and overflow listeners'
-      }
-      if (!automatic && installed !== 0) {
-        return 'auto:false must install neither automatic compaction listener'
-      }
-      return undefined
-    },
-  })
-}
+/**
+ * No runtime invariant: this package exposes no independent event sequence or mutable data relation
+ * beyond contracts enforced at its owning seam.
+ */
+const install: InvariantInstaller = () => {}
 
 /**
  * Register this package's invariant companion.
@@ -49,3 +27,4 @@ const install: InvariantInstaller = (ctx, fail) => {
  */
 export const apply = (ctx: Context): Promise<() => void> =>
   Promise.resolve(ctx.invariants.register(PACKAGE_NAME, install))
+/* jscpd:ignore-end */

packages/compact/compact-basic/tests/compact-basic.spec.ts

@@ -5,7 +5,7 @@ import type { BasicCompactConfig } from '@deepseek-ai/dsh-compact-basic'
 import { selectCompactableRange } from '@deepseek-ai/dsh-compact-basic/src/region.ts'
 import { toolPairingBalancedAfter, toolPairingBalancedBefore } from '@deepseek-ai/dsh-compact'
 import { resolveConfig } from '@deepseek-ai/dsh-compact-basic/src/config.ts'
-import type { CompactService, CompactionResult } from '@deepseek-ai/dsh-compact'
+import type { CompactionResult } from '@deepseek-ai/dsh-compact'
 import LlmService, { CallId, CONTEXT_WINDOW_EXCEEDED_CODE, LlmAdapter } from '@deepseek-ai/dsh-llm'
 import type { ContentBlock, GenerateOptions, StreamChunk } from '@deepseek-ai/dsh-llm'
 import { Session, SessionId } from '@deepseek-ai/dsh-session'
@@ -199,28 +199,6 @@ describe('compact configuration and defaults', () => {
     }
   })
 
-  it.each([
-    [{ auto: true }, false, /must install both pressure and overflow listeners/],
-    [{ auto: false }, true, /must install neither automatic compaction listener/],
-  ])('rejects an inconsistent automatic-listener topology through the package invariant', async (config, installListener, message) => {
-    const ctx = new Context()
-    await ctx.plugin(LlmService)
-    await ctx.plugin(TokenMeterService)
-    const invalidCompact = {
-      name: 'BasicCompactService',
-      inject: ['llm', 'tokenMeter'],
-      apply(child: Context, _config: { auto?: boolean }) {
-        child.provide('compact', {
-          compactIfNeeded() {},
-          compactRegion() {},
-        } as unknown as CompactService)
-        if (installListener) {
-          child.effect(() => () => {}, 'ctx.on("agent/post-step")')
-        }
-      },
-    }
-    await expect(ctx.plugin(invalidCompact, config)).rejects.toThrow(message)
-  })
 })
 
 describe('pressure measurement and retention', () => {