A text error list does not show how failures are distributed across historical source versions or let developers aggregate repeated rejection reasons. Emit and save the same JSON report with per-version outcomes, stable failure groups and per-input diagnostics, plus runtime, checkout and report locations. Keep source versions from physical discovery rather than migrated handle headers.
Classify only known diagnostic fields such as unexpected members, unknown events, child prerequisites and sequence gaps. Preserve original messages and use an explicit fallback for other failures; the report makes no inference about historical producer bugs and cannot influence admission or retry decisions. Regression checks cover printed/file/log equality, private report files, grouped distinct sequence coordinates and source-file preservation.
Sequential corpus migration waits for each Session to finish I/O and publication verification before starting the next. Use a bounded queue with one shared persistence Context, defaulting to available CPU count capped at 16. Expert --jobs overrides accept any positive safe integer. Stable input indices and separate completion counts keep interleaved progress useful for large corpora without opening every log simultaneously.
A concurrently upgraded child can invalidate its parent evidence. Preserve the backend revision checks and defer only the explicit source-change error for one serial retry after initial work drains. Corruption, unsupported formats and writer locks remain failures; historical files and existing V4 data remain unchanged. Deterministic scheduler tests cover 10,000 inputs, bounded overlap and retry ordering, while real raw/zstd corpora verify parent catalogs and serial-equivalent output. Performance timing was stopped at user request because the host has competing workloads.
Give developers one pnpm command to exercise the release migration against their own Session roots. Inventory physical generations so malformed entries remain visible, then reuse JSONL write-open locking, validation, and exclusive successor publication with the full root available for child-catalog evidence. Open existing V4 files read-only and preserve every historical generation.
Report each selected source and outcome, continue after individual failures, repeat all errors at the end, and retain a private temporary report with checkout/runtime details and full causes. A failed run exits nonzero. Explicitly close handles because source-launch await-using lowering inside a loop can retain a previous iteration error. Real-entry regressions cover raw/zstd tool-result conversion, repeated runs, unchanged originals, failure continuation, and unsupported layouts. Document the command in the migration cookbook.
The cookbook previously promoted plugin prefixes and owner separation into a general requirement. That overstates the migration policy: direct source kinds and ordinary metadata need no new namespace solely because they are extensible.
Require each edge to document only the mappings its target needs and why, preserve nested opaque data, and permit alpha refusal of unexpected source fields that would otherwise acquire new target meaning. Exact V3 source and ToolSchema choices remain in the V3-to-V4 README; no runtime, schema, or provider behavior changes.
The convention identifies how an edge preserves the identifiers and extension fields that it explicitly maps; it does not require every extension-owned field in every source slot to be renamed.
Keep the cookbook general enough for preserved stream-start extras while retaining the exact field-owner mappings documented by each migration edge. This changes policy wording only, not the current V4 schema or conversion implementation.
The flat result conversion prefixes every extension-owned field, not just names currently colliding with core fields. Correct the cookbook wording to match that complete mapping.
Record why retaining opaque message and wrapper owners does not invent a shared owner or a new core metadata field. The deliberate costs are retaining duplicate opaque values and requiring plugin consumers to use V4 names; the first-class tool-message decision and runtime implementation stay unchanged.
An incoming converter runs only when a historical generation is selected. Fixing a mapping after the target ships does not revisit already-produced target files, so allowing compatible converter fixes must not imply repairing those files automatically.
Keep the user-approved ability to extend or correct historical conversion without a target version bump. Require documentation of changed accepted mappings and continued support for existing outputs, and distinguish that work from changing target representation or interpretation incompatibly. Keep operational alpha guidance in the cookbook and the owning decision note focused on the runtime facts.
The compatibility obligation belongs to the released target format.
An incoming converter can be fixed or support more historical inputs after
the target ships, as long as its output preserves that target's meaning.
Alpha releases may reject valid historical cases without an implemented,
evidenced mapping instead of expanding the format for speculative inputs.
Record the native-writer oracle, pre-normalization comparison, supported
flat V4 tool-result representation, uniform plugin naming, owner collision
rules, retained source files and read-only private corpus handling in the
migration cookbook. Align the existing architecture note with this rule;
keep native target changes and source conversion fixes distinct.
This updates contributor guidance only. It does not change finalization
checkpoint machinery, existing V4 schemas, or any released codec.
V3 permits external event, source and content identities and additional
request-tool fields. Copying those values into V4 can give an old plugin
named tool a core source identity, turn old tool-addition content into a
registry instruction, or activate formerly ignored deferLoading and delivery
metadata. Rejecting such collisions would instead refuse valid source logs.
Keep historical extensions in the existing extensible JSON representation.
Prefix unknown content and ignorable event tags with plugin:, preserving
all other content fields and opaque event payloads. Prefix external source
identities with plugin:plugin: or plugin:source: so wrapper and direct kinds
cannot collide even when original names already contain a category prefix.
Known first-party mappings remain explicit and unchanged.
Prefix extra request-tool field names and block-start field names with
plugin:, retaining exact values and existing-prefix doubling. Core schema
parameters, arguments, replay state and nested plugin data are not traversed.
Keep future-generation delivery records inactive after header promotion.
Pin the V3 event vocabulary independently of the current writer and provide
an offline verifier against an explicitly selected historical source commit.
Attachment authorization and export inspect declared event content only.
Team checkpoints preserve all own keys of unknown JSON blocks while still
rejecting malformed known content and retired core tool-result blocks.
Exercise physical read/write/reopen, prefix injectivity, own __proto__ keys,
provider opacity and retained source-identity snapshots.
No generic extension block, metadata wrapper or new schema-tooling type is
introduced. V4 type declarations, persistence schema, checkpoint and frozen
V0-V3 codecs remain unchanged. Canonical tool-result lifting and incomplete
child-catalog policy remain separate concerns.
Adapted from the extension-preservation work in 7ba7e174dd1 by Tianyi Cui.
Co-authored-by: Tianyi Cui <[email protected]>
The V3-to-V4 README described the main representation changes but did not
enumerate the complete admission and preservation rules. That left reviewers
without a package-owned reference for supported histories, child evidence,
native validation, or cases that must fail without publishing a successor.
Document historical conversion separately from native V4 admission, including
source renames and collisions, first-class tool results, child catalogs,
delivery metadata, retained identities and references, lifecycle checks,
developer-message constraints, fork behavior and recovery entry points.
Explicitly identify the retired-wrapper refusal and the limited scope of
general content validation rather than implying a complete payload validator.
Require this transformation/admission catalog in the version-addition
cookbook so future adjacent migrations document each supported mapping,
unchanged representation, refusal and preservation obligation. Preserve the
accepted-baseline policy: compatible V4 additions use new acknowledgements;
only breaking changes require a new writer version.
The integrated V3-to-V4 records contain the header increase that authorizes
their breaking changes. Leaving those terminal records editable would let a
later change reuse that already accepted 3-to-4 increase, so version 4 would
not establish a stable compatibility baseline for persisted user data.
Capture the accepted root classifications and semantic record digests in a
separate finalization checkpoint. Validate that checkpoint before rendering
or writing acknowledgement artifacts, and preserve its accepted records even
after the current writer advances. Keep publication evidence independent:
the verified released version remains 3 until a release establishes otherwise.
Compare future writer-4 schemas with the accepted baseline using the existing
compatibility classifier. Compatible additions remain permitted through new
same-version acknowledgement records. Breaking changes require a higher
writer and their own header transition; comments, aliases and source-location
changes do not alter the accepted semantics. Later unaccepted compatible
records retain the existing update workflow.
Document the distinction between finalization, publication and compatible
evolution, with regression coverage for locked records, incomplete or
inconsistent checkpoints, additive changes and future-version transitions.
Traversal ordinals and first-owner paths gave shared persistence types
unstable display names. Keep authored names and source locations as metadata,
use structural digests for identity, and render complete kind/form groups
with bounded array labels. Preserve historical rendering and stored graphs.
Record supported source compatibility promises with their property binding,
policy version, discriminator, preservation rule, and qualified kind set.
The extractor and classifier require explicit opt-ins in both compared
schemas; ordinary or unsupported changes retain strict classification.
Policy-bearing graphs use the format-2 fingerprint domain while unannotated
graphs keep their format-1 fingerprints. Runtime owners activate bindings
only with the corresponding reader behavior; this tooling layer activates
none and changes no package source or Session generation.
Provide a read-only before/after review command that groups shared structural
evidence without replacing authoritative compatibility diagnostics. Match
changed alternatives only through unique literal discriminators and retain
ambiguous additions and removals as independent facts.
At the X baseline, all 61 roots and 472 schemas, digests, and source fields
are unchanged. The inventory remains format 1 and removes only 296 synthetic
names. Existing acknowledgement history still matches every root. All 195
focused tooling tests, Host build/full lint, and bilingual pairing pass.
Run the dsh-archive-agent-notes audit over every active Agent Note on
current master, judging each record by whether its rationale still guides
work rather than by size or age.
- Archive 453 implemented bilingual triplets (417,882 English words):
completed UI chrome, narrow adapters, closed bug fixes, implementation
walkthroughs whose package READMEs, docs pages, generators, or successor
notes now carry the useful behavior, and 51 records fully superseded by
a later active note. Keep 201 implemented notes whose ownership rules,
negative guarantees, durable or wire semantics, security rules,
reintroduction conditions, or still-tempting rejected alternatives
remain useful.
- Reject 7 proposals whose premise is gone or whose work shipped in
amended form under other records; delete 2 rejected notes that no
longer prevent a plausible mistake.
- Retarget every remaining inbound link to the archived path, and repair
active prose that named an archived record as the owner of a live fact:
parenthetical citations drop, ownership sentences redirect to the
README, docs page, or active note that states the fact, and history
citations say so. Chinese files link the English archived path because
the pairing gate treats the frozen tree as outside the bilingual corpus.
- Seal 1,359 new frozen artifacts; existing seals are unchanged and
outbound links from archived notes are neither inspected nor repaired.
- Regenerate docs/config-catalog.md after the hook-bridge comment edits
shifted two source line numbers.
- new cookbook page adding-a-remote-api (en/zh): the five-step HOW-TO
for declaring, failing, registering, consuming, and testing a Remote
endpoint.
- new Agent Note ctx-remote-failure-vocabulary records this round's
decisions and alternatives; the 2026-08-02 and 2026-08-10 notes are
rewritten to the shipped facts (RemoteError vocabulary, $host, the
retired ApiProxy statements).
- package READMEs pick up the new failure-face contracts
(typert/protocol, api/gateway, api/remotes,
test-support/client-runtime), dsh-util-time gains its README and
registry entries, and stale connection/WorkspaceError/legacy-code
statements are corrected (ui-settings, ui-settings-models,
workspace-controller, docs/subsystems/typert incl. the
TypertGatewayErrorCode type-equiv block).
- packages/AGENTS.md gains the Remote-failure rule bullet; its doc
budget rises 675 -> 714: the bullet is the compressed remainder
after relocating detail to the cookbook and the Agent Note.
Rename the tool-presentation transport from code-mode to ptc everywhere
that is not written into session logs: the mode config value becomes 'ptc',
the preset directory/id becomes ptc, the demo becomes demo:ptc, the
dispatch waterfall becomes tools/ptc-dispatch-log (types PtcDispatch*), the
prompt rule becomes tools:ptc-only, source/test files become ptc.ts etc.,
and prose says PTC mode / PTC 模式. The session-persistent vocabulary
(durable events tool/code-dispatch*, logged plugin name tools-code-mode,
sub-call id segment :code:) intentionally stays and moves in the stacked
persistence PR, which is blocked until the SESSION_FORMAT_VERSION v0→v1
migration lands with it. run_code, its code parameter, CodeSdkLanguage,
CodeRunFailedError, the dsh-code-runtime family, third-party codex names,
and frozen archived notes keep their names.
Replace the standalone @deepseek-ai/dsh-acp-demo application with dsh --profile acp plus ordered example patches. The shipped acp-app bundle owns only the protocol bridge; every example overlay now targets shared dsh-base rows instead of copying a complete application tree.
Move launcher responsibilities into the ACP snapshot harness: it materializes profile patches, links required packages, reserves stdout for JSON-RPC, observes spawn and drain failures, and escalates process teardown deterministically. The relocated control-surface fixture and the ACP/subagent integration tests now exercise the real CLI/profile path.
This commit contains authored runtime, configuration, and test changes only. Generated transcript and projection churn is deliberately left for the next commit so reviewers can inspect the migration logic without hundreds of expected-output edits.
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