The guide tab gains a compass hero, per-entry descriptions (shown while
at most four entries are listed), and a quieter cube placeholder for
entries that registered no glyph; the files entry registers its
description and folder glyph. Bundled stat fixes: the session usage
dialog drops the zero cache-write row, and the turn-time pill renders as
plain text when its dialog would only repeat the pill's own duration.
StatsPills buttons carry explicit aria-labels separating segments with
' · '; a log with no timed figure renders the counts pill as a static
reading instead of a button opening an empty dialog; the pills row owns
one exclusive open slot so sibling dialogs never stack. ContextMeter
restores the '~' approximation prefix (usedTokens prefers heuristic
projectedTokens). ModelSelect's jscpd:ignore now names the real gap
(useAnchoredPosition places from the left edge only). The pills Agent
Note's stale facts (locale keys, context occupancy, golden ownership)
are rewritten in place, en+zh. plan-review.e2e.ts parks the pointer
after Approve so the ContextMeter tooltip cannot leak into the aria
captures; affected goldens refreshed.
Master archived three Agent Notes this branch had fact-updated (archived
copies restored to their frozen master content; the pills note now links
the archived path), extended the steer-all placeholder to continuable
children (spec and subagent e2e take master's behavior with this branch's
reworded copy), and dropped the session-sharing sentence from feedback
acks (goldens re-refreshed with the new placeholder).
The A/B winner over the single-line StatsLine: a gauge pill (counts + TPS,
opening the session-stats dialog) and a database pill (billed total +
cache-hit share, opening the exact token-usage dialog), sharing a new
stat-dialog module. StatsLine and its dead locale keys are deleted, the
gauge icon is optically centered, and the composer keeps its 4px clearance
through the data-composer-stats contract. Agent Note added; stale
StatsLine references across implemented notes updated in place.
A single-consumer pure helper does not earn its own file: the mapping
now lives beside the prose vocabulary it serves (same shape as the
deliverables file-mention logic), and its unit cases merged into the
component spec.
Assistant prose that references a workspace-contained local media path
(e.g. ``) now renders through a same-origin
`GET|HEAD /api/file?path=` route instead of inert alt text.
- ui-primitives: MarkdownText gains a settled-only MarkdownPathImages
vocabulary gate (same posture as file mentions); no vocabulary means
byte-identical output.
- ui-chat: AssistantMarkdown supplies a page-stable rewrite vocabulary
for absolute POSIX paths (local-path-media.ts).
- session-controller: SessionMediaReferences plugin contribution mounts
the route on the authenticated connection.fetch channel; per-request
policy = workspace-root containment after realpath, regular file,
allowlisted media extension (images additionally signature-checked),
range/HEAD streaming, private no-store + nosniff, fail-closed statuses.
- Agent Note added (feature/2026-09-07-session-prose-local-media-display).
Closes#3662.
Preserve the V3 system-prompt projection while adopting master’s per-agent frozen-message provenance and frontend performance gates. Keep benchmark workload admission and diagnostics fixes intact, and retain both migration and first-open/reopen lifecycle guarantees.
Give appended Chat system messages their own cards and suppress the following initial or same-step update header card. Preserve replacement/header ownership and conservative unknown surface ordering. Trajectory uses prompt-only presentation when no request header is loaded, never fabricated provider, model, or tools; prepend deduplicates against real request changes. Test-first regressions showed missing Chat cards and missing trajectory prompt data; 148 focused tests and affected client project typechecks pass.
The in-operator narrows SessionEvent to events whose surfaceOp is required. Remove redundant undefined checks from both target Definitions; retain append-versus-replacement discrimination and shared prompt interpretation. This deletes dead conditions reported by the full type-aware CI lint gate without adding fallback behavior.
Validation: both Chat and Trajectory definition regression suites pass with the simplified predicates.
Chronological lookup keeps B after compaction shadows it even though the model sees surviving head A and no system event is emitted. Share pure extraction and compact immutable surface interpretation through uiConversation; target-owned Definitions preserve historical cards. Track inherited surface positions in a map containing only surviving replacement endpoints. No full-log scans or prompt work on ordinary messages/chunks.
A partial window cannot infer the order of older unindexed endpoints: pre-window [head seq5, tail seq3], followed by replacements 3->6 and 5->7, must not report seq7 as effective. Withhold subsequent prompt text until prepend reconstructs the prefix; exact pure and both target regressions cover unavailable -> C. Drop shadowed replacement-index entries; repeated rewriting one node keeps one entry, while historical prefix maps remain immutable. Current replacement work is O(S+P), where S is surviving system nodes and P surviving replacement endpoints; history retains per-prefix copies, not an unbounded linked chain.
Coverage includes A->B->C, A->B->compaction->A without a system event in replay/live/partial windows, chained nonmonotonic replacements, empty tails, head rewrites, unknown ordering, inherited prompt withholding, and index pruning. Focused suites total 89 passing cases; rebuilt trajectory smoke 3 passed. Affected client types/lint/bundles, diff checks, and 33/33 doc-sync gates passed. README EN/ZH and owning note updated. Parent owns final GUI/recorded-session evidence; no server started.
Consolidate the existing in-history capability, loop, UI and artifacts into one baseline. Preserve the reviewed tree so each independently verified correction has a subsequent rationale-rich commit.
Compose the shared release branch PTC rename with the structural system-head migration in the existing V2-to-V3 stage. Audit source payloads and remap local coordinates before renaming dispatch vocabulary and owned plugin attribution; retain original message identities and generation-qualified references. Native V3 validation combines the same system and PTC lifecycle semantics through a private released-validation view.
Reuse the V3 row-admission owner in current JSONL scanning before recoverable-tail suppression, so malformed rows cannot hide retired required PTC tags or header.system. The new corruption-prefix regressions and all173 existing JSONL scanner tests pass. Combined migration/catalog/persistence suite:300 tests; executable V3 migration source has100% coverage. No released generation, prior migration implementation, shared release branch, benchmark or CI workflow is modified by this integration.
A resume header starts a visible request series even when the system node text is unchanged. Include resume in the request-prompt visibility predicate so full history and an older-page prepend retain the restart card. Keep startsSeries handling and existing regression assertions unchanged; align the local JSDoc and README pair.
Consolidate the representation-change PR and its rebase reconciliations into one baseline. Preserve the exact tree and keep the in-history feature in the dependent PR. Follow-up fixes remain separate.
Yichen Jiang