Phase 75 (TODO.md L4): "Save as doc" now drafts a document from the
ENTIRE chat session — every question and answer up to the click, in
order — instead of only the clicked bubble's answer; the existing
doc-edit screen's free-form body editing is how the user edits out
anything they don't want to keep from previous replies (no new UI
surface).
Task 01 (frontend):
- app.js buildSessionTranscript(): walks the bor.chat.v1 conversation
record in order — a numbered section per user turn ("## N.
<question, raw>" + blank line + the raw answer text; more answers
join under the same heading), sections blank-line separated, all
trailing whitespace collapsed to one final newline. Only the raw
persisted text travels (m.who + m.text — no thinking blocks, no
source chips, no tune metadata); a brain record before the first
user record is skipped; a heading-only section marks a user turn
whose answer never landed (A6, owner-confirmed 2026-09-08).
- saveAsDoc(btn): the draft body is buildSessionTranscript(); the
dead single-bubble markdown parameter is dropped (the button's
appendSaveAsDocButton signature is unchanged — one button per
bubble). Title/path/double-click guard/hand-off are unchanged
(defaultDocTitle: the last question, whitespace-collapsed,
<=120 chars; docs/<slug>.md).
- Unit: the app.js source pins move to the transcript shape (whole
session, no thinking, no dead parameter).
Task 02 (E2E):
- tests/e2e/test_save_doc_session.py (bare-repo fixture, the
phase-59 convention — git as source of truth): three DISTINCT
on-topic turns in one session (turn 1 carries the phase-17
"think out loud" trigger so its record has a thinking block the
transcript must exclude) -> save on the LAST bubble -> the
prefilled body is ## 1./## 2./## 3. in order, byte-exact against
the deterministic mock, thinking-free -> edit the whole
section-2 block out of the body -> push -> git show
bor-docs:<path> equals the EDITED body byte-for-byte (section 2's
question and answer provably absent; sections 1 and 3 byte-exact;
the UI's sha prefix is git rev-parse bor-docs). Second test:
the button on the FIRST bubble still drafts the whole session
(A6 — the transcript is the session at click time, title stays
the last question); canceling leaves the branch tip untouched.
- tests/e2e/test_response_to_docs.py: the phase-59 single-turn body
expectation moves to the transcript shape ("## 1. <question>" +
the answer's markdown) — the rest of the suite unchanged.
Also lands the phase-74 file moves (00_phase.md /
03_mock_marker_e2e.md -> complete/) and the phase reports — the
house convention of committing .agents/ with the phase.