Merge remote-tracking branch 'origin/master' into worktree/web-multimodal-image-input

# Conflicts:
#	.agents/notes/implemented/architecture/2026-07-05-reconstructable-requests.i18n.yaml
#	.agents/notes/implemented/architecture/2026-07-05-reconstructable-requests.md
#	.agents/notes/implemented/architecture/2026-07-05-reconstructable-requests.zh.md
#	.agents/notes/implemented/architecture/2026-07-25-web-input-machine-and-slash-pipeline.i18n.yaml
#	.agents/notes/implemented/architecture/2026-07-25-web-input-machine-and-slash-pipeline.md
#	.agents/notes/implemented/architecture/2026-07-25-web-input-machine-and-slash-pipeline.zh.md
#	THIRD_PARTY_NOTICES.md
#	apps/cli/composition.md
#	apps/cli/config/base.cordis.yml
#	apps/cli/package.json
#	apps/cli/src/app-cli-entry.ts
#	apps/cli/src/bin.ts
#	apps/cli/tests/args.spec.ts
#	apps/web/tests/built-boot.snapshot.ts
#	apps/web/tests/navigation-panes.e2e.ts
#	docs/architecture.i18n.yaml
#	docs/architecture.md
#	docs/architecture.zh.md
#	docs/config-catalog.md
#	docs/cordis-catalog/services.md
#	docs/core-data-structures/core.i18n.yaml
#	docs/core-data-structures/llm-streaming.i18n.yaml
#	docs/event-producer-consumer.md
#	docs/module-graph.md
#	examples/acp-agent/tests/snapshots/cordis-inspect-jsdoc/session.jsonl
#	packages/README.i18n.yaml
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#	packages/client/connection/README.i18n.yaml
#	packages/client/connection/README.md
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#	packages/client/connection/src/client/fixture.ts
#	packages/client/connection/src/http-bridge.ts
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#	packages/client/connection/tests/fixture.spec.ts
#	packages/client/connection/tests/node-half.spec.ts
#	packages/client/runtime/README.i18n.yaml
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#	packages/client/runtime/src/client/contract/session.ts
#	packages/client/runtime/src/client/sessions/session.ts
#	packages/client/ui-conversation/README.i18n.yaml
#	packages/client/ui-conversation/README.md
#	packages/client/ui-conversation/README.zh.md
#	packages/client/ui-conversation/src/client/apply.ts
#	packages/client/ui-conversation/src/client/chat/AssistantMarkdown.tsx
#	packages/client/ui-conversation/src/client/chat/ChatView.tsx
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#	packages/client/ui-conversation/src/client/chat/MessageItem.tsx
#	packages/client/ui-conversation/src/client/contract/slots.ts
#	packages/client/ui-conversation/src/client/index.ts
#	packages/client/ui-conversation/src/client/input/contract.ts
#	packages/client/ui-conversation/src/client/input/facade.ts
#	packages/client/ui-conversation/src/client/input/hub.ts
#	packages/client/ui-conversation/src/client/locales.ts
#	packages/client/ui-conversation/src/client/service.ts
#	packages/client/ui-conversation/src/client/skeleton/ConversationSession.tsx
#	packages/client/ui-conversation/src/client/skeleton/InputBar.tsx
#	packages/client/ui-conversation/tests/apply-inject.spec.tsx
#	packages/client/ui-conversation/tests/input-bar.spec.tsx
#	packages/client/ui-conversation/tests/input-matrix.spec.tsx
#	packages/client/ui-conversation/tests/input-scenarios.spec.tsx
#	packages/client/ui-conversation/tests/service-orchestration.spec.ts
#	packages/client/ui-conversation/tests/skeleton.spec.tsx
#	packages/client/ui-trajectory/tests/views.spec.tsx
#	packages/compact/compact-basic/README.i18n.yaml
#	packages/cordis/tool-cordis/src/api-catalog.ts
#	packages/host/apiproxy/README.i18n.yaml
#	packages/host/apiproxy/README.md
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#	packages/host/apiproxy/src/api-proxy.ts
#	packages/host/apiproxy/src/api/rpc.ts
#	packages/host/apiproxy/src/api/sessions.ts
#	packages/host/apiproxy/src/index.ts
#	packages/host/apiproxy/tests/api-proxy-models.spec.ts
#	packages/host/apiproxy/tests/rpc-schemas.spec.ts
#	packages/llm/llm-pi-ai/README.i18n.yaml
#	packages/llm/llm-pi-ai/README.md
#	packages/llm/llm-pi-ai/README.zh.md
#	packages/llm/llm-pi-ai/src/adapter.ts
#	packages/llm/llm/README.i18n.yaml
#	packages/ui/tui/README.md
#	packages/ui/tui/README.zh.md
#	packages/ui/tui/src/components/content.ts
#	packages/ui/tui/src/components/transcript.ts
#	packages/ui/tui/tests/tui.spec.ts
#	pnpm-lock.yaml

packages/compact/compact-basic/README.md

@@ -17,7 +17,7 @@ This backend owns the compaction policy:
 - **Convergence** — retry head-checkpoint compaction up to `compactionRetries`; reject a summary that does not shrink its source, and throw if retries cannot return below threshold.
 - **Summarization** — a direct `llm/stream` call uses the configured provider/model pair and cap, falling back to the latest logged request target and then the agent target, without running the loop-only `agent/request` seam. The call replays the conversation's own system prompt, tools, and shadowed-region messages verbatim, including image references, and appends the compaction instruction as the final user message, so it reuses the provider's warm prefix cache instead of invalidating it. The selected adapter must resolve or explicitly reject those images. It sets `GenerateOptions.purpose` to `compaction`, which adapters may forward as request attribution (the DeepSeek adapter sends `x-deepseek-harness-compact: 1`) without touching the model-visible body. Only returned text enters the checkpoint, excluding reasoning and tool calls that would leak private reasoning or create an orphaned call; image output fails with `UNSUPPORTED_CONTENT` rather than disappearing.
 - **Framing** — the replacement user message marks established checkpoint context with `<compacted-summary>` tags. The raw summary remains on the provenance event, and later automatic cycles merge the prior checkpoint.
-- **Lifecycle** — all entry points share one bracket-first region transaction. It validates the range and live lock, appends `compact/start` synchronously, prepares and awaits the summary, revalidates, appends provenance plus the replacement, and makes exactly one closing attempt. Automatic and explicit-region calls require a numeric open-turn owner and whole-surface stability. `compactNow()` reserves idle admission, uses `turn: null`, accepts append-only context outside its selected span, flushes every closed attempt, and releases admission in `finally`.
+- **Lifecycle** — all entry points share one bracket-first region transaction. It validates the range and live lock, appends `compact/start` synchronously, prepares and awaits the summary, revalidates, appends provenance plus the replacement, and makes exactly one closing attempt. Automatic and explicit-region calls require a numeric open-turn owner and whole-surface stability; the serial `agent/pre-step` listener checks pressure before request derivation, while canonical provider overflow enters through `agent/request-error` and authorizes retry only after durable surface progress. `compactNow()` reserves idle admission, uses `turn: null`, accepts append-only context outside its selected span, flushes every closed attempt, and releases admission in `finally`.
 - **Overflow recovery** — provider-confirmed overflow needs no capacity metadata: it bypasses normal pressure and retention, prunes, then attempts one maximal balanced head reduction while leaving the newest indivisible unit. Retry is authorized whenever `surface.replaceGeneration` advances, including when pruning lands before later summary work throws. No replacement, an exhausted target-specific cap, cancellation, or an unknown/noncanonical error preserves the original provider failure.
 - **Failure handling** — a live unmatched `compact/start` is the durable lock. An unmatched marker before a newer `session/end-seed` is stale evidence from a prior lifecycle and does not block; one after that boundary reports `busy`. Summary and changed-span failures close with an error and leave the conversation surface untouched, though the attempt remains in the log. A failed close deliberately leaves a blocking orphan. Operational pressure failures warn and continue, while overflow-recovery failure preserves the original provider error only when no earlier replacement advanced the surface. Cancellation remains authoritative after cleanup and durability.
 
@@ -162,4 +162,3 @@ The replayed system prompt, tools, and shadowed-region messages match the conver
 - **Some indivisible-unit and envelope-only overflow remains outside surface compaction** — recovery cannot shrink system/tools/prefix, split an indivisible non-tool node, or repair a tool unit whose non-prunable remainder still exceeds the window. The optional pruner can shrink text-bearing tool-result bulk inside an otherwise indivisible pair.
 - **`compactRegion` requires an open turn** — a manual call on a fully-closed session throws ("no open turn") rather than compacting.
 - **Summarization failure preserves the latest durable surface** — before any replacement, the auto path logs a warning and proceeds with full over-budget history. If pruning already landed, a later summarization failure proceeds from that durable pruned surface. Summarization truncation at `maxTokens`, which hidden reasoning tokens can consume, follows the same rule.
-- **The summarization call has no transcript-snapshot coverage** — `dsh-llm-replay` derives calls from `assistant/chunk` events, so this chunk-less direct `ctx.llm.stream()` call cannot replay (named deferred replay infrastructure in [the seam Agent Note](../../../.agents/notes/implemented/feature/2026-06-18-compaction-capability-seam.md)).