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2026-08-10feat(model): expose a thread's replies as child rowsDanilo M.2-5/+153
setThreadMessages drops the depth-0 message: it is the thread's first message and the root row already stands for it. Keeping it would show a thread of seven as one root and seven children, contradicting the reply count the row advertises. Calling again replaces rather than appends, so a thread reloaded after a sync does not list its replies twice. A message row reports its own sender and subject, not the thread's. That is the mistake worth guarding: the thread's author summary usually contains the first sender too, so reading it renders something plausible for the root's own reply and wrong for every other one. Mutation-checked, and the wrong version returns 'Alice' where 'Bob' belongs. Child rows carry no tag pills. The strip is a row-wide band of the thread's tags; one under each reply would stripe the list and repeat identical tags down the expansion.
2026-08-10refactor(model): convert ThreadListModel to QAbstractItemModelDanilo M.2-14/+102
A table cannot indent or expand, so message rows need a tree. This task changes only the base class and the index plumbing: no children are produced yet, so the 30 pre-existing tests in test_threadlistmodel are the regression net proving a thread row still behaves exactly as it did, and QAbstractItemModelTester checks the index/parent round trip a hand-written assertion would miss. Two things the table version could leave wrong and a tree cannot. columnCount returned 0 for a valid parent, which would give message rows no columns and render them blank. And rowCount now answers only for column 0, since a tree takes one set of children per row and offering them under every column draws an expander in each. The model stays two levels deep even though replies carry a reply depth of their own. The visual nesting past the first level comes from that depth, not from further parent-child structure, so no index calculation has to recurse.
2026-08-10feat(worker): load a thread as a reply tree with per-message depthDanilo M.4-0/+113
loadThread could not be extended to do this. It walks notmuch_query_search_messages, and a message obtained that way returns NULL from notmuch_message_get_replies (notmuch.h:1617-1628), so that walk cannot produce reply depth at all. The tree comes from notmuch_thread_get_toplevel_messages instead, and the pane keeps the flat list it wants. walkReplies takes raw notmuch_message_t*, against this file's rule that every handle is RAII-owned. Messages reached through a thread are freed with it (notmuch.h:1637), so an NmMessage wrapper would destroy memory the thread frees again. The NmThread in the caller is what keeps them alive. Every message in the thread gets a node regardless of the query: the list is where the reply count is read, and hiding unmatched replies would make that count disagree with the rows under it. Both tests mutation-checked. Flattening depth fails the depth assertion, and skipping the thread walk fails it too, so neither passes against the two mistakes the notmuch API invites.
2026-08-10feat(types): add MessageNode for message rows in the thread listDanilo M.1-0/+31
A message row has to be drawn without opening the message, so it needs sender, subject and date. MessageRef carries none of them: it exists for rendering a thread into the pane and holds only id, path, tags and matched. depth defaults to 0, the thread's first message, which the root row stands for rather than a child row. threadId is carried so a batch of nodes names the thread it belongs to without the caller tracking it alongside.
2026-08-09fix(ui): stop a restored splitter position collapsing the message paneDanilo M.2-0/+19
A splitter position is saved in pixels, so one saved in a wide window does not fit a narrower one: QSplitter::restoreState() honours the first pane's saved size verbatim and gives the second whatever is left. A real 1285/1252 split restored into a 1136px window left the message pane 29px wide, a sliver of rendered mail beside a full-width thread list. The wider the window ever was, the worse the next narrower session. Fixed with a minimum width on the pane and setCollapsible(1, false), which covers the restore and the equivalent drag. A restore-time repair running from showEvent() was written first and deleted: with the floor in place it was mutation-tested to be redundant, since the minimum width constrains restoreState() as much as it constrains a drag. The floor is 300px rather than a bare "visible" width, because it is reached only when a position does not fit and should land somewhere mail is readable; at 200 the placeholder's own text wraps every few words. The test asserts against the pane's own minimumWidth() rather than a repeated literal, with a guard on the floor itself so it cannot pass against a lowered one. Note for later work in test_mainwindow: the offscreen platform chooses the window width itself and has been seen to choose differently between two runs of the same binary (1181 and 779), and it ignores resize(), setFixedWidth() and a resize of the splitter on a shown window. Any assertion on a pane ratio, or on the second pane's pixels, is measuring that choice rather than this code. Backlog item 55, whose recorded cause blamed the thread view's size hint and first-run layout. Measured, that hint is 256px, not the 886 the item computed from the column widths, and a freshly built window splits correctly; the entry has been corrected in place.
2026-08-09fix(config): report an out-of-range message_zoomDanilo M.1-2/+17
The documented 0.5 to 3.0 range was already enforced, by MessageView::clampZoom(), so message_zoom = 500 rendered at 3.0 rather than unusably. What was missing is the report: the key parses, so nothing ever told the user that the value in their file is not the value on screen. Reported rather than clamped a second time. MessageView owns the bounds and does the work; a copy of the range in Config would be free to drift from the one that matters, so config.cpp reports against kMinZoom and kMaxZoom directly. This is where it differs from toolbar_icon_size, which has no widget-side enforcement to defer to. Backlog item 58, whose recorded cause was wrong on this point and has been corrected in place.
2026-08-09fix(ui): give Archive its own iconDanilo M.1-1/+4
Item 59, reported by the user against 0.12.0. Archive and Mark all read both used `mail-mark-read`, so with the toolbar following a desktop set to icon-only the two buttons were indistinguishable, despite doing different things: archive removes `inbox` from the selection, mark all read removes `unread` from the whole view. Introduced by item 56 in the same session. `archive` had that name from before, when only eight actions carried icons, and item 56 assigned it to `mark_all_read` as well without checking the table for duplicates. `mail-archive` is also the more accurate name, since `mail-mark-read` describes read state rather than archiving. The test asserts the class rather than the reported pair: a hand-written table of twenty-four names has more plausible duplicates in it, so noTwoActionsShareAnIcon compares every action against every other. It compares cacheKey() rather than the theme name, because two different names resolving to the same art are equally ambiguous on screen, and it guards on every action having an icon first, since on a theme that resolves nothing the comparison loop would never run and pass vacuously. Mutation-checked with a different collision. Item 56's own probe is what let this through: it verified every name resolves to non-null art, which is true of two names resolving to the same art. Resolving and being distinguishable are separate properties. The replacement was picked by rendering both at 24px and comparing the images. Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>
2026-08-09feat(ui): make the toolbar icon size configurableDanilo M.3-0/+59
Follow-up to item 56. With the toolbar now following the desktop's button style, an "icon only" desktop makes the icon the whole control, and this style reports PM_ToolBarIconSize as 16px, which is a small target for a button with no text beside it. A [general] toolbar_icon_size key, 16 to 64, defaulting to 24 rather than to the style's own metric. Setting it to 16 restores the theme's value. Clamped and reported, unlike message_zoom, which documents a 0.5 to 3.0 range in the README and enforces none of it. Both ends here break the UI that would be used to fix them: too small is an invisible icon, too large is a toolbar taller than the window. The unenforced message_zoom range is recorded as item 58 rather than fixed here, since it is a separate defect that predates this change. Also documents in the README that saved-query button labels are the key names from the user's own [queries] section, which is why the "Flagged" button still read that way after the action was renamed: it is a user's query name, not a string this code owns. The sample config now shows `Important = tag:flagged` to teach the wording the UI uses. Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>
2026-08-09feat(ui): icons on every action, and rename Flag to ImportantDanilo M.2-5/+50
Items 56 and 57, done together because both touch the action registry. 56. The complaint was inconsistency, not absence: eight of twenty-four actions had themed icons, so two adjacent entries in one menu disagreed and the toolbar laid out an empty slot for the other sixteen. The themeIcons table now covers them all. The fifteen names added were probed against a live icon theme first rather than taken from the freedesktop spec on faith, and the existing null-icon guard still lets a theme that lacks one fall back to text. The second half of the note asked that buttons honour the desktop's "Icon only" setting. They could not: the hardcoded setToolButtonStyle overrode it whatever the user had chosen. It now reads SH_ToolButtonStyle. Dropping the call entirely was tried and rejected, since a bare QToolBar defaults to ToolButtonIconOnly rather than to the platform hint, which ignores the setting just as thoroughly the other way. This is a visible change: on a desktop set to "Icon only" the toolbar now shows icons without text. 57. "Important" over "Starred", the user's pick; the Message menu already has "Mark &spam", so "Starred" would have needed an accelerator from inside the word. Changed the action text, its status tip, the undo description and the star column's tooltip, which still read "Flagged". The tag stays `flagged`. It is wire format that neomutt, the user's saved queries and ThreadSummary::isFlagged() all read, and following the label through to the tag would rewrite the mail store and desynchronise every other tool over the same Maildir. The action name stays `flag` too, since that is the key users write in [keys]. Four tests. everyActionCarriesAnIcon names every action missing one and guards against passing on an empty list; it reported all sixteen before the change. theImportantActionStillWritesTheFlaggedTag asserts on the tag the model actually received, and mutating it to `important` fails that test plus two pre-existing held-edit tests. Also adds the changelog entry for the cron-sync indicator fix, which the commit that made it omitted. Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>
2026-08-09fix(sync): clear the pending-edit count on a cron syncDanilo M.6-2/+139
Item 54. A sync fired by the user's cron carries tag edits to the mail store exactly as a local one does, but only onSyncFinished() cleared the pending state, so the indicator kept reporting work that had already shipped and the exit prompt asked to sync for it. Verified against a real cron run: 31 changes, cleared with no manual sync. The window cannot see an external run's exit status, and /proc/locks carries no outcome. It does not need to: mailsync.sh already ends every run with a "RUN END ... status=OK" banner in its log, which outlives the process that wrote it. MailSync::lastRunOutcome() reads a bounded tail of that file and takes the last completed marker, so no change to the script and no optimistic guessing were needed. Only a definite OK clears anything. A failed run, a missing or unreadable log, and a State::Unknown lock reading all leave the count alone: over-reporting costs a redundant sync, under-reporting costs the user their edits. m_editedAccounts is drained in the same place, before flushHeldEdits() and matching the local path's ordering. Item 49 uses it to choose which mbsync channels a run syncs, and a count that reached zero while the set stayed full would look correct and still sync the wrong channels. The log path comes from a new optional [sync] log key, defaulting to where the script writes, so a test never reads the developer's own log. Two notes on the verification, both recorded in the backlog: - A timing probe endorsed a tail read that was not happening. The first version of the huge-log test required the call under 100 ms and passed with the seek deleted, because reading 10 MB is fast either way. Replaced with an assertion on content. - Every fixture was invented and the first batch had the wrong timestamp format, since the script uses date -Iseconds. The tests passed anyway, because the parser keys on the prefix and the status token. One test now builds the banner the way the script does. The before-flushHeldEdits ordering has no test: without a held lock the flush is a no-op, so both orderings pass. Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>
2026-08-07feat(sync): sync only the accounts with unsynced editsDanilo M.8-6/+149
A sync ran mbsync -a regardless of what changed, so tagging mail in one account fetched all of them. The account set was not a parameter anywhere on the path: MailSync::start() took no arguments and the script hardcoded -a, so nothing between a tag edit and mbsync carried which account changed. Track which accounts have edits and pass their mbsync channels through to the script, which now takes channel names and falls back to -a when given none. An empty set means all accounts, per the request: a sync with nothing pending is a fetch, and narrowing that to wherever the last edit landed would quietly stop collecting mail everywhere else. The channel is a new optional per-account key rather than the section key. The two names genuinely diverge, because a QSettings section key may carry dots that the channel does not, and mbsync treats an unknown channel as fatal rather than skipping it, so key-as-channel would fail those accounts' syncs outright rather than degrade. It defaults to the key, so accounts whose two names already agree need no config change. The edited-account set is deliberately not netted the way the pending-edit map is: that map tracks the index, where a tag removed and re-added leaves nothing outstanding, while this tracks the mail store, where both writes have already renamed files that mbsync still has to propagate. It is also snapshotted before flushHeldEdits(), which inserts into it synchronously rather than on a queued reply, so a successful sync cannot clear accounts whose edits it never carried. Closes item 49. Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>
2026-08-07feat(ui): add a Maildir overview under HelpDanilo M.5-0/+199
Nothing in the UI reported database-level facts: every query gave a thread count for that query, and nothing said how much mail there is overall. A dialog under Help now shows messages, threads and tags from notmuch, plus the account list from config, since notmuch does not model accounts at all. A separate worker call rather than a reuse of requestCounts, which counts threads to match the row count of a query. This counts messages, which is what a user means by "how much mail is in here". The test pins 4 messages in 3 threads against the fixture and fails if they are ever made equal, so routing both through one count cannot pass unnoticed. Every field starts at -1 and renders as "unknown" when notmuch could not answer it. Printing 0 would say the Maildir is empty, and telling someone their mail is gone is the worst way to report an index that failed to open. The dialog opens showing "Counting..." rather than blocking, since counting every message is not free on a large database. That makes two lifetimes matter: the reply can arrive after the dialog is closed, so the label is a QPointer, and the dialog can be closed and reopened while a count runs, so a generation counter drops the older answer. The test drains DeferredDelete before firing the late reply, because close() deletes through deleteLater and without that the dangling case is never actually reached.
2026-08-07feat(ui): make Escape deselect the row as well as blank the paneDanilo M.2-1/+45
Blanking the pane while leaving the row highlighted reads as half an action, and deselecting is what Escape means nearly everywhere else. The user asked for two actions rather than a changed one, so clear_pane keeps its behaviour and moves to Shift+Esc; clear_selection takes Escape and does both. Shift+Esc rather than unbound because every action carries a default and a test enforces it. Clearing the selection re-adopts the thread it just cleared, unless done in exactly the right way. clearSelection() leaves currentIndex() valid, so onSelectionChanged takes its "one or fewer rows" branch, sees a current row whose id differs from m_currentThreadId, and calls onThreadSelected for it. Clearing the selection before blanking lets that run while the id still matches, so nothing reloads, and clearing current stops a later collapse-to-one-row reaching the same row. All four arrangements were tried; only this one passes. The first version of the test could not distinguish any of them. It asserted showingPlaceholder(), which passes regardless because this fixture has no worker, so loadThread never replies and the pane is never repainted. currentThreadId() and currentIndex() are observable without one, and asserting those is what made the test discriminate.
2026-08-07feat(ui): fill the blank message pane with a branded placeholderDanilo M.9-3/+596
An empty right pane said nothing, and multi-select made it a routine sight. It now carries the wordmark, thread counts that run their query when clicked, and a sync line that appears only when something needs attention. Rendered into the existing web view as a third document shape, so there is one document path and one set of security rules. The brand palette is a deliberate exception to deriving colours from the desktop theme, since a logo is brand rather than chrome; the theme still picks which of the two sets is used. Counts refresh when the pane is about to show rather than in the background: one goes stale the moment a tag is edited, and refreshing one nobody is looking at is work for nothing. A generation counter discards a superseded reply, and a late answer cannot repaint over an opened thread. The helper lines are real links because JavaScript is off in this profile. The handler is gated on the placeholder actually being displayed, so the same URL inside a message body is dropped: a stranger's mail must not drive the thread list, even to run a harmless query. Three defects found while building, all silent: - Every CSS percentage was invalid. QString::arg does not collapse "%%" into "%", so the document carried "50%%" and the browser dropped each declaration holding one, disabling the mask, the glow and both radial gradients while still rendering something plausible. Substitution is by named token now, which cannot collide with a percent sign. - A geometry probe endorsed the layout while that was live, because it measured only properties without percentages. - The font test passed against a build with one face missing, since the other satisfied both of its checks on its own. The mockup's light values needed correcting against a real pane: the grid vanished at a 2% luminance step on white, and the glow subtracts light there rather than adding it, washing the pane. Strength only, not hue.
2026-08-07feat(ui): show each thread's tags under its rowDanilo M.8-43/+480
The thread list was uniform and cramped: every row one line tall, with nothing to say what a thread was about before opening it. Rows are now roughly double height, carrying a strip of tag chips beneath the text, with alternating row colours and a star column for flagged threads beside the existing paperclip. The strip is painted by the VIEW rather than by a delegate, which is why ThreadListView exists. A delegate is handed one cell's rectangle and cannot paint outside its column, so a strip drawn from the subject column stops at that column's edge, losing the last tags of a well-tagged thread, and starts at its left edge, putting the chips under the subject instead of under the row. Tags the row already shows another way are left out: inbox as structure, unread as the dimming, flagged as the star, attachment as the paperclip, and the account as the chip in the subject cell. Sorted, since notmuch's order is not guaranteed stable and a row whose chips reordered between repaints would flicker. Six defects were introduced and fixed on the way here, all of them one consequence: a QTableView paints per cell, and a row-wide strip is not a cell. SubjectDelegate installed view-wide drew the account chip into every column, since AccountLabelRole belongs to the row; it is split into RowStyleDelegate for every column and SubjectDelegate for the subject alone, with a Q_ASSERT guarding that. Row height returned from sizeHint did nothing, because a table takes one height per row. The strip painted from x=0 over the marker columns, via a protected viewportMargins() that returns 0. Measuring the text band and the strip with one font put the pills over the date. Alternating colours and the selection are per-cell too, so the band showed bare viewport background until the view filled it, honouring the model's own BackgroundRole first so a deleted row is not cut in half. And that fill spanned the full width, cutting the centred marker glyphs at their midpoint. Closes item 5. Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>
2026-08-07fix(ui): tell read threads from unread without relying on boldDanilo M.5-8/+109
Bold was unread's only cue, and it renders identically to regular on the user's system: confirmed by eye against a bare QTableView holding a plain QStandardItemModel, with no code from this project involved. The fault is in Qt or fontconfig, below this application, and nothing in the model could ever have reached it. Read and unread mail looked exactly alike. The emphasis is inverted instead. Unread rows keep the palette's own text colour and read rows are dimmed toward the background, so the cue rides on Qt::ForegroundRole, which the delegate already honours, and costs no column. It also suits the real ratio, measured at 99 unread against 4220 read: dimming the bulk is calmer than highlighting it. The dim colour is derived from the palette, never hardcoded, per the rule item 12 established. Bold is kept for systems where it works, but nothing depends on it now. That exposed a second defect, visible the moment it shipped. Qt resolves ForegroundRole into the palette and then prefers it over HighlightedText, so a model-supplied colour wins on a SELECTED row too. The dim is blended against the unselected background, so a selected read row painted grey on the selection colour, near unreadable. SubjectDelegate::initStyleOption now reverses that, and the delegate is installed view-wide rather than on the subject column alone, so every column gets the same handling instead of three of them keeping Qt's ordering. The guarding tests state the property rather than the mechanism: strip the font from the model's answer and the two states must still differ. A test asserting only that bold is set passes on a system where bold paints like regular, which is exactly how this survived. The selection test renders two rows identical but for the unread tag, selects both, and requires zero differing pixels. Part of item 5; the density work and the star column remain. Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>
2026-08-07fix(ui): the message pane follows the desktop themeDanilo M.4-14/+153
The stylesheet hardcoded #bbb, #555, #000, #666, #ddd and #4a6f8a, and set no background at all, so on a dark desktop plain-text mail rendered as black on white inside a dark window and the web view's own default showed through. The colours now come from a Palette struct derived from QPalette, and are passed into the builder rather than read from qApp inside it, so the stylesheet can be tested against a known palette with no running application. Base and Text rather than Window and WindowText: the pane is a content surface like a text edit, and on many themes those differ. The secondary colours are blends of text and background, not fixed greys. That is the part that makes it work both ways round, since a #555 chosen to read as subtle on white is nearly invisible on #2b2b2b. The quote colour keeps its hue, because "this is quoted" is carried by being a different colour rather than a dimmer one, but is pulled toward the background so it stays readable instead of glowing on dark. A sender's own HTML is deliberately left alone, and a test asserts that so it cannot drift: rewriting a sender's styling would break layouts that depend on it, and a newsletter setting a white background is entitled to stay white. This themes the plain-text render and the chrome around messages, nothing more. MessageView passes its own widget palette rather than the application's, since a style sheet or a themed parent can give the pane different colours from qApp, and re-renders on PaletteChange: the document's colours are baked into its stylesheet at build time, so unlike a widget it does not restyle itself when the desktop theme changes. The load-bearing test asserts the negative, that no hex colour appears in the style block which the palette did not supply. A test checking only that the palette's colours are present passes with a leftover literal still there, and one leftover literal is the whole defect. Confirmed by mutation. Closes item 12. Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>
2026-08-07feat(tags): mark every thread in the view read, in one undoable stepDanilo M.3-0/+105
An action removing "unread" from every thread in the current view, on the toolbar, the Message menu and Ctrl+Shift+U. It deliberately ignores the selection, which makes it the one action in the window that does, and it routes through the same funnel as every other tag change, so it is one write rather than one per thread. Disabled until the query reports its total. Threads arrive in batches, so before then the model holds only what has landed, and an action saying "all" must not silently skip the rest. A greyed control says "not yet" without needing a dialog or a stall the user cannot see. The state is also set at registration, since QAction starts enabled and a window that has not run a query has nothing to act on. Two things came out differently from the plan, both forced by existing code. It carries a default binding, because everyActionHasAShortcut requires every registered action to have one: an unbound action is unreachable from the keyboard, and that invariant is deliberate, so the action was given Ctrl+Shift+U rather than the invariant relaxed. And only the threads that are actually unread are sent, because sending the rest would inflate the pending-edit count with writes that change nothing, and the quit prompt reads that count. A view with nothing unread does nothing, pushes no command and says so: an undo entry that restores nothing is worse than none, since it absorbs a Ctrl+Z meant for the previous action. undoDepthForTesting() is new and exists for a reason worth recording: undo->isEnabled() cannot answer "was a command pushed", because the undo QAction is always enabled and tests canUndo() when triggered. The first version of the no-op test asserted on it and passed against a mutant with the unread filter removed. Closes item 43. Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>
2026-08-07feat(sync): the status bar says which account is syncingDanilo M.4-7/+242
"Syncing..." was set once and never updated, so a run that takes over a minute reported nothing about what it was doing. The original diagnosis in the backlog was half wrong, and two further wrong ones were made and discarded before the real cause: plain "mbsync -a" prints NOTHING until it exits, then a single summary line. Measured on a real run, one line at 11:11:08 then 73 within the second 11:11:33, at the end of a 46-second run. So there was no stream to read for the part of a sync that takes time. It is not buffering, so stdbuf changes nothing, and the account name is not unavailable either, which was the second wrong conclusion. mbsync -V is what changes both: it announces each channel as it reaches it, which is at once the progress and the account name originally asked for. The shipped script now passes it. SyncPhaseTracker derives a short status from the output as it streams: the channel being synced, the summary counts when mbsync ends, then the notmuch reindex. It lives beside MailSync rather than in the window so the matching rules are one testable thing, and it holds no widget. Matching is loose and case-insensitive, since the wording varies by version, and nothing in it decides success or failure: the exit status remains the only authority on that. Lines are reassembled in MainWindow before being fed, because QProcess::readAll() splits wherever it happens to and a half-line would match nothing. Every status is sanitised and truncated: the channel name comes from a config file this app does not own, and a long one must not stretch the status bar. Two defects in existing code, fixed with it. setSyncBusy(true) ran after start(), so a fast run's output arrived before the per-run reset and wiped its own phase. And a first draft deferred phases while a transient message showed, which let a "Background sync completed" message armed before the sync began suppress the whole run: a running sync's state outranks an expiring event message. Verified by replaying real captured mbsync -V output through the tracker, not only against fixtures. The MainWindow test paces its script with sleeps, since a script that prints everything at once arrives in one readyRead and makes every intermediate phase unobservable. Closes item 42. Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>
2026-08-07fix(mime): a body part carrying a Content-Id no longer renders blankDanilo M.1-1/+8
collectParts() filed any part with a Content-Id into inlineParts and returned before the text/plain and text/html branches. Setting a Content-Id on the text/html body is legal and common in bulk-sender output, and such a message parsed with both body slots empty, so hasHtml() was false, HtmlBuilder fell through to an empty plain body, and the pane rendered nothing. Both halves of the report, the blank message and "no HTML part", came from that one ordering. A content id makes a part referenceable, not undisplayable. The two are independent. The branch now registers the part and falls through rather than returning, so the body still fills its slot. Registering first keeps a part that is both the body and a cid: target reachable under its id for any sibling referencing it. Content-Disposition is deliberately not used as the discriminator: it is absent far more often than it is correct, and a body part commonly carries none. The existing attachment check remains the only test for "not a body", and the first-one-wins isEmpty() guard still stops an inline image displacing a real body, since an image matches neither text branch. Verified against a hand-written fixture whose text/html part carries a Content-Id, asserting the body renders, the id still resolves, and the sibling image is unaffected. Load-bearing by mutation: restoring the early return fails the test. The user could not relocate the message that prompted the report, so the end-to-end path is unconfirmed. Closes item 41. Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>
2026-08-07fix(tags): the Remove field suggests only tags the selection hasDanilo M.1-2/+17
Both TagDialog fields built their completer from knownTags, the whole database's tag list, so removing a tag offered every tag in existence rather than the handful the selected threads actually carry. The candidates were already in the dialog: currentTags, used until now only to render the checkbox list. The constructor now walks two (field, vocabulary) pairs instead of two fields sharing one list, with knownTags for Add and currentTags.keys() for Remove. On a multi-thread selection that is the union, not the intersection, since removing a tag two of three threads carry is a meaningful request. The setWidget and per-token prefix machinery is untouched: these fields hold a comma-separated list, and QLineEdit::setCompleter is the trap this dialog already works around. Only the candidate list changed. Completion stays a suggestion, never a whitelist, so a tag absent from the candidates still applies. Tests type keys rather than using setText, which does not drive a completer at all. Verified load-bearing by mutation: reverting the Remove vocabulary to knownTags fails the new test. Closes item 48. Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>
2026-08-06fix(ui): one Sync control, and a query bar that looks finishedDanilo M.2-30/+60
Sync had two controls that behaved differently. The QPushButton beside the query bar cleared the log, opened the pane and disabled itself; the QAction behind the toolbar, menu and shortcut called start() and did nothing else, discarding its return value so a rejected start was silent. Worse, item 29's "disable Sync during a background sync" set the button only, so the toolbar entry stayed clickable through a cron sync and could only produce the script's EX_TEMPFAIL skip. startSync() is now the single handler behind every route in, and the enabled state lives on the QAction, which reaches the toolbar, the menu and the shortcut at once. It also reports when no sync command is configured rather than doing nothing. The QPushButton is gone. It read as a Search button given it sat beside a text field, which is the user's own observation and the reason the toolbar one survives instead. Its unavailable-command tooltip moved to the action, since that is the only thing that says why the control is dead. Removing it left the query field running flush to the window edge, so the saved-query buttons move from their own row onto the query row. The bar is now framed by the account dropdown on the left and the saved queries on the right, the empty row is gone, and the thread list gains the space. The field also gains setClearButtonEnabled, which is Qt's own themed clear icon rather than a hand-rolled button. A "Search" button was considered and rejected: Return already runs the query. No overflow handling for [queries], which is unbounded. Three entries fit; item 23 already specifies buttons-plus-menu and is where that belongs. CLAUDE.md's architecture diagram named four widget classes that have never existed, QueryBar, SavedQueryBar, HeaderWidget and AttachmentBar. The query row and the message header are built inline. Corrected, and the components that do exist but were missing from it added. Tests: the new action test was verified red first and load-bearing by mutation. The old button test is deleted rather than repointed, being an exact duplicate of it, and the unobservable-lock test now drives the action. The clear button and the row layout were confirmed by hand; no test clicks the icon, which is a mouse path. Backlog: 45 done and reclassified as a defect rather than a cosmetic redundancy, 47 added for the bar.
2026-08-06test: stop two tests depending on the machine they run onDanilo M.2-1/+28
Both are the same class of defect: a test that reads real machine state and so passes or fails on circumstance rather than on the code under test. Item 38. Every MainWindow a test builds constructed its SyncMonitor on the live /proc/locks, so a window observed the machine's actual sync state and the sync-button assertion failed whenever the user's cron sync happened to be running. Cron fires every ten minutes and a run lasts ~35s, which is roughly 6% of runs, and it read as flakiness. SyncMonitor already took an injectable locks path for exactly this; MainWindow did not expose it. It does now, as a test seam rather than a config key: /proc/locks is not something a user would set, and a wrong value silently disables background sync detection instead of failing loudly. The monitor is still constructed and started, per the item's own constraint. Only the table it reads is redirected, to an empty file in the test's own temporary directory. Item 46. uiStateSurvivesARestart asserted a 940px width, and the offscreen platform reports an 800x800 screen. restoreGeometry() clamps to the available area, so the width came back as 798 while the 620 height, which fits, restored untouched. That asymmetry was the tell that persistence was fine and the test was wrong. The size is now 640x560 and carries no meaning beyond differing from the default. Verified by reproducing the original conditions rather than by waiting for them: the suite run under flock -n /tmp/mbsync.lock fails item 38's assertion with the seam bypassed and passes with it in place, and item 46 now passes under offscreen where it failed. One dud mutation is recorded in the backlog, writing an unparseable line into the injected lock table does not fail the test, because lockHeldIn() correctly finds no lock in it. Suite: 15/15 offscreen with the lock held, and green on Wayland except the pre-existing querycompleter screenshot flake, which fails to grab under Wayland and passes offscreen.
2026-08-06fix(sync): hold tag edits made during a background syncDanilo M.4-3/+179
A tag edit sent while another process holds notmuch's write lock does not fail: the read-write open blocks and then succeeds. Measured against Slackware's notmuch, 9.158s against a 12s hold, status SUCCESS. Since the worker is a single thread, that blocked open holds up every read queued behind it, so the message pane freezes on whichever thread was selected first and replays the queue when the lock releases. The window now defers instead. While SyncMonitor reports a sync running, a tag change is held rather than sent, and flushed when the sync ends. The optimistic update stands in the meantime, so the row keeps its tag and the edit still counts toward the unsynced indicator, which is what the quit prompt reads. The original diagnosis was that the open fails and the edit is discarded, and a retry was built on it. That was wrong: the error branch in notmuchworker.cpp is unreachable through lock contention. The premise was taken from a plausible-looking error path without provoking the condition, and measurement disproved it. The backlog entry records this rather than quietly correcting it. Verified by hand against a real blocking open, which the tests cannot reach: they drive the deferral through the meta-object and never take a lock. Both locks held for 100s with a tag edit made during the hold. Row kept the tag, status did not expire, indicator rose, window stayed responsive, held edit sent itself on release. The 2s SyncMonitor polling window is knowingly left open: a sync starting between polls is invisible for up to 2s and an edit there still blocks. SyncMonitor::lockHeldIn() would close it at the cost of one file read per tag action, and is recorded as the option to revisit. Also fixes revertPendingTagChange() clearing the entire undo stack after any rejected write, found while working on this. Backlog: item 37 done, and item 46 added for a test that fails only under the offscreen platform, where an 800x800 screen clamps a restored 940px window. Pre-existing and unrelated; the suite is green otherwise.
2026-08-04fix(sync): count unsynced edits as net state, not as writesDanilo M.2-10/+76
Item 28, reported by the user: open a thread, let the automatic mark-read remove `unread`, then press Ctrl+U to put it back. The indicator read "2 unsynced change(s)" with the mail store exactly where it started. The counter incremented per confirmed write and never decremented, so any add-then-remove of the same tag inflated it. Mark-read is simply the path that fires without being asked, which is why it surfaced there. The user's call was net state: an edit and its inverse are zero outstanding changes, because what the indicator answers is whether quitting now would strand work. A QHash keyed "<messageId>\n<tag>" replaces the int, and a pair that reverts is erased rather than stored with the new direction, so the map cannot grow without bound across a long session of tagging and untagging. Keyed per (message, tag) rather than per message: removing `unread` and adding `flagged` on one message are independent changes and must not cancel each other. A change carrying no message ids cannot be netted against anything and is counted separately, since dropping it would understate the indicator, which is the direction that costs work. Both properties item 18 established still hold: a successful sync clears everything, a failed one clears nothing. Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>
2026-08-04feat(ui): make Delete a toggle, and expire transient status messagesDanilo M.2-11/+91
Items 16 and 33. Delete now removes the `deleted` tag when every selected thread already carries it, so pressing it twice puts a thread back. One direction for the whole selection, never per row: toggling each independently would leave a single keystroke with the selection in two states, which is worse than either outcome. Status messages are classified rather than blanket-timed, which is the substance of item 33. Events expire after six seconds and fall back to the last query's thread count: "Sync complete", "Nothing to undo", the skip notice, the per-action "Archive: 3 threads". State does not expire: "Searching...", "Syncing...", the selection count, and "Sync failed (exit N)", because an error must not vanish before it is read. A test caught a mistake in that routing. Making the per-action message transient armed the timer during select-all, since tagSelected() runs on a selection onSelectionChanged() had just described, and the count would then be replaced while it was still true. Writing the count now cancels any transient still counting down. QStatusBar::showMessage() would give the same behaviour but the label is added with addWidget() beside permanent widgets, so adopting it means reworking that arrangement. One timer beside the label is the smaller change. Both fixes verified by reverting them and watching the tests fail. Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>
2026-08-04fix(ui): name the default button on the quit promptDanilo M.1-0/+9
Item 31. The user could not tell which button Enter would press on the unsynced-changes dialog. The code was already correct: setDefaultButton() is called, and Qt agrees, isDefault() and hasFocus() are both true on "Sync and quit". The active style, qt6ct-style, simply draws no visible default-button decoration. The GIMP dialog offered for comparison is GTK drawing its own focus ring, a different toolkit. Naming the default in the text rather than restyling the button: overriding the appearance means fighting the user's theme, which is worse than one word. The safe option was already the default, so no behaviour changed. Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>
2026-08-04feat(ui): disable Sync during a background sync, and blank the pane on EscDanilo M.3-7/+71
Items 29 and 32. 29 was a constraint item 27 specified and that shipped unbuilt: while a cron sync held the lock the Sync button stayed clickable, and pressing it could only produce the EX_TEMPFAIL skip. The progress bar and the button are now written by one updateSyncControls() taking both sync sources, which the item asked for by name: two independent assignments, one per path, means whichever finishes second wins, so a background sync ending would re-enable the button in the middle of a local run. Unknown re-enables the button, deliberately. It means /proc/locks could not be read and nothing was observed, so leaving the button disabled would strand it permanently wherever the lock cannot be seen. 32 adds a clear_pane action on Esc. It clears m_currentThreadId with the pane, not merely alongside it, or a threadLoaded still in flight would paint the thread straight back; and it cancels any pending mark-read, since a thread blanked from view must not be marked read two seconds later. The selection, the query and the undo stack are untouched. The one real risk in 32 was Escape being stolen from the query completer, the way Return was once lost to a window shortcut. Probed rather than reasoned about: a popup consumes the key before a window-level shortcut sees it, so the completer still dismisses. Every test here was verified by reverting the code it covers. Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>
2026-08-04fix(sync): stop a local sync reporting itself as a background oneDanilo M.2-10/+38
Reported from hand testing: a manual sync ended with "Sync finished elsewhere" stamped over its own result. Ownership of a lock period was being decided when the lock was RELEASED, by asking MailSync::isRunning(). That question cannot be answered then: the process exits, so isRunning() goes false, and only afterwards does the next poll observe the lock gone. The guard therefore suppressed the message while the sync ran and let it through at the end, up to two seconds after onSyncFinished() had already said what happened. Ownership is now latched when the lock APPEARS, which is the moment isRunning() can still answer, and the matching release is swallowed. onSyncFinished() hands the latch back when it sees exit 75, because a skip means the lock was never ours: if a manual run and the cron run start inside one poll interval, the lock would otherwise be latched as local and that other run's completion swallowed with it. Also renames the messages to "Background sync running/completed" per the user: "finished elsewhere" reads as though the application does not know what is syncing the Maildir, when in fact it is the same script. The tests added here cover the external path and the Unknown state. They do NOT reproduce the reported bug, and were checked against a reverted fix to confirm that: staging it needs isRunning() true at the Running transition and false at the Idle one, which cannot be arranged in test_mainwindow without a configured sync command and a live child process. That was tried and abandoned, it left a process running for the length of the suite and popped a dialog. The ordering and the fix were instead verified against a standalone model of both code paths. Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>
2026-08-04feat(sync): notice syncs this window did not startDanilo M.5-0/+306
The user's cron runs mailsync.sh every ten minutes, so mail arrives and tags change while the window sits idle, and nothing here noticed. The script already holds an flock for the whole run, so that lock is the signal: no status file is needed, and a kernel lock cannot go stale because it dies with the process holding it. The observation method is the part that matters, and two of the three plausible ones are wrong. Both were probed on Linux 6.18 before any of this was written: - flock -n acquires in order to test, so polling every two seconds would open a window every two seconds in which a starting mailsync.sh is refused the lock and exits 75. It would cause the very skips the script reports. - fcntl(F_OFD_GETLK) never acquires and looks ideal, but reports UNLOCKED against a lock held by flock(2): separate lock namespaces in the kernel, which cannot see each other. A silent false negative. - /proc/locks is a pure read. It observes flock(2) correctly, and since it takes no lock at all it can never contend with the Xapian write lock notmuch new holds during the same run. Confirmed: 200 reads left the lock table unchanged and this process holding nothing. SyncMonitor keeps the parsing separate from the polling so the parsing is testable, and it reports Unknown rather than Idle where /proc/locks cannot be read: "no sync is running" is the claim that would let the window quit, so it must never be guessed. Verified against a real flock end to end, not only against synthetic content. It reports rather than refreshes. runCurrentQuery() clears the undo stack, the selection and the message pane, which is right for a query the user typed and hostile for one a cron timer fired: it would discard undo history and close the thread being read up to six times an hour, with no action from the user. Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>
2026-08-04feat(ui): make multi-select discoverable and stop it opening threadsDanilo M.3-0/+174
Multi-select already worked by Ctrl+click and Shift+click, but nothing in the UI said so and every tag action was keyboard-only, so the Ctrl+T tag dialog could not be reached with a mouse at all. Adds a select_all action on Ctrl+A, registered like every other action so it reaches the Edit menu, the shortcut reference and [keys]; a right-click menu on the thread list built from the same QActions rather than parallel copies; a selection count in the status bar, which is the part that actually teaches the feature by acknowledging a selection while it is being built; and a note in the shortcut dialog for the mouse gestures, which are view behaviour and cannot appear in the generated table. A selection gesture must not open mail or mutate it. Selecting several rows now blanks the message pane and cancels any pending mark-read, rather than rendering each row swept through and queueing it to be marked read. Two Qt behaviours shaped this, both established by probe rather than from memory: - selectAll() emits no currentRowChanged at all and leaves the current index invalid. - currentRowChanged is emitted BEFORE the selection model is updated. The second one caused two distinct faults. Collapsing a multi-row selection back to one row reported the old count, so the guard swallowed the load and the pane stayed blank; that case is handled in onSelectionChanged, which sees the true count. And a Ctrl+click taking the selection from one row to two also reported one, so the thread was loaded, blanked, and then painted back when the queued reply returned from the worker. By the third row the id was already cleared and the reply was discarded, which is why the fault presented as an off-by-one in the threshold rather than as a race. Tests cover the synchronous half. The late-reply guard has no test: MainWindow in tests has no worker, so threadLoaded never fires and the repaint cannot be reproduced in process. Verified by hand instead. Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>
2026-08-04docs: scrub account names from comments, tests and fixturesDanilo M.1-2/+2
Real Maildir account keys had reached comments and test data: provider-and-mailbox names across three source files, one of them carrying a surname, plus a real address used as example data in the notmuch test fixture and the design spec. The user's standing rule is that maildir and account names never reach a commit, and this is about to become a public repository, which is what makes it consequential rather than untidy. Replaced with generic keys that carry the same shape, since the length is the point in every one of these comments: a 33-character account tag is why the chip label exists and why the tag column was removed. The measurements stay. They are the evidence behind those decisions and are not personal details. Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>
2026-08-04feat(sync): dismissable log pane, progress bar, and a skip that is not a failureDanilo M.2-6/+112
Four changes to the sync UI, three of them from using it. The log pane could not be dismissed. It is hidden at construction and shown on failure, and nothing ever hid it again, so a single failed sync left it on screen until the application restarted. It now sits in a container with its own Close button, and is 200px rather than 120, because mbsync's output is wide and repetitive and the shorter pane showed too little of it to read. It still appears only on failure, which the user confirmed is what they want. A sync gives no feedback while it runs. The status bar now carries an indeterminate progress bar for the duration, and the Sync button is disabled rather than left looking live. The bar is indeterminate on purpose: mbsync reports no percentage and the script's output is unstructured, so a bar filling left to right would be inventing a fraction nobody knows. The log is also cleared at the start of each run, since leaving the previous run's lines in place makes a stale failure look like the current one. The lock skip was reported as a failure. mailsync.sh exits when another run holds the lock, and that was exit 1, which qtmaildir reads as "sync failed": it showed the log pane and, on the exit path, told the user their changes were still unsynced. With a cron timer every ten minutes, a click landing inside a run is routine and none of that is true. The script now exits 75 (EX_TEMPFAIL) and the window reports it as its own case, saying a sync is already running. On the exit path it stays open and says plainly that the other run is most likely carrying the changes over but that this window cannot see it finish, rather than guessing either way. That last hedge is what item 27 records: the application cannot see a sync it did not start. The user chose continuous polling of the lock file over the narrower "only while quitting" version, and the entry notes that the lock is already the signal, so no status file is needed, and that a kernel lock cannot go stale where a written file can. Verified against stub binaries: a second run while the lock is held exits 75 and says SKIPPED, while the run holding it completes at 0. Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>
2026-08-04fix(tags): complete every tag in the list, not only the firstDanilo M.1-1/+70
Reported by the user: in the Edit tags fields, the first tag suggested existing tags and the second did not. Typing a comma, a space and a letter offered nothing. QLineEdit::setCompleter hands completion to the line edit, which overwrites the completer's prefix with the widget's ENTIRE text on every keystroke. These fields hold a comma-separated list, so once one reads "unread, fl" that whole string is matched against the tag names, nothing matches, and completion silently stops after the first tag. Confirmed with a probe: the prefix really is "unread, fl" and the completion count really is zero. Attach with setWidget instead, which keeps the popup anchored without ceding control of the prefix, and drive it from the token under the cursor on every edit. Setting the prefix from a textEdited handler while leaving setCompleter in place does NOT work, which was the first attempt: the line edit sets it again afterwards. Accepting a candidate needed the same treatment, and is the other half of the fix. QCompleter's own insertion replaces the whole field, so taking "flagged" from the popup would have discarded every tag already typed. replaceCurrentToken() overwrites only the token under the cursor and keeps the separator's spacing, so the result is "unread, flagged" rather than "unread,flagged". This is the same defect QueryCompleter hit in c98b179. Having now cost two debugging rounds, it is written into CLAUDE.md as a Qt trap rather than a property of either class, together with the reason a test using setText() passes against it: setText does not drive a completer at all, so the keys have to be typed. Both new tests were confirmed to fail against setCompleter before the fix was kept. Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>
2026-08-04feat(tags): add an Edit tags dialog on Ctrl+TDanilo M.6-0/+389
Five hardcoded tags were the only ones reachable from the UI: archive, delete, spam, flag and toggle_unread. For an application whose purpose is organising mail by tag, applying any other one meant leaving for a terminal. Item 26 of the usability backlog, raised by the user asking how to add a tag and finding they could not. One dialog rather than separate add and remove actions, at the user's choice: filing something under a new tag while dropping inbox is one thought, not two. Type tags to add or remove, comma separated, or clear a checkbox to drop a tag already on the selection without retyping its name. Both fields complete against the tag list MainWindow already holds for the query completer. Completion is a guard against typing shoppping beside shopping, never a whitelist: inventing a tag is the entire point, so any valid name goes through whether or not it exists yet. Tri-state checkboxes carry the multi-thread case, and are where the risk is. A tag on some selected threads shows partially checked, and leaving it alone changes nothing; the opposite reading would silently tag threads the user never looked at. A tag already on every thread and left checked is likewise not a change and is not sent as one. Tag names are validated before anything is applied, through a free function so the rules are testable on their own. Empty, a leading dash (notmuch's CLI reads it as removal, making such a tag a trap), whitespace and control characters are refused by name and reason. Nothing is applied until the whole set passes, since the user cannot tell which half of a partial change landed. TagDialog is pure UI: handed the vocabulary and the current state, returning two lists, contacting no worker. That is what lets its fifteen tests run without a notmuch database. Integration is a single call to the existing tagSelected(), so undo, the optimistic model update, the combined multi-row query and the completer refresh for a brand-new tag all come for free. One test assumption was wrong and the code was right: a case asserted that QStringLiteral("null\0byte") truncates at the null and reads as empty. It does not, so the null is caught as a control character. The test was corrected rather than the validator. Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>
2026-08-04feat(sync): show unsynced edits and offer to sync on exitDanilo M.4-18/+214
Tagging changes the notmuch index at once, but the mail store only hears about it on the next sync, and nothing said so. Quitting with tagging outstanding was silent. Items 18 and 19 of the usability backlog, built together because the second needs the first's counter. The counter cannot be QUndoStack::isClean(), which is the obvious candidate and the wrong one: the undo stack is cleared on every query, since its entries refer to rows the new result set discards. Tag a thread, run any query, and the stack is empty while the change is still unsynced. m_pendingEdits is its own count, incremented where a write is CONFIRMED rather than where one is sent, so an optimistic update the worker later rejects cannot leave the indicator claiming an edit that never landed. Only a successful sync resets it: clearing on failure would assert the changes had reached the mail store when the sync is exactly what failed to put them there. It is shown in the status bar, hidden entirely at zero, and described as a lower bound rather than a guarantee, since an external notmuch run can carry changes over without this application noticing. On exit, sync_on_exit in [general] takes ask, always or never. Three values rather than a bool because "prompt me", "just do it" and "do nothing" are three behaviours and true/false expresses two; an unknown value warns by name, since a typo there silently changes what happens to unsynced work. The prompt offers three buttons for the same reason: a user who hit Quit by mistake needs a way back that is not "sync". A sync started at exit holds the window open until it finishes rather than being killed mid-run, and a sync that FAILS does not quit, because quitting there would discard the user's choice silently. With no sync command configured the prompt degrades to a plain warning instead of offering a sync that cannot run. This is not a destructive-action confirmation of the kind CLAUDE.md forbids. Those cover tag mutations, which keep undo instead of a dialog. This asks about losing work at the one point where undo cannot help. The tagsApplied lambda became a named slot, which is better structure and also what lets a test drive it: the worker is deliberately parentless because it moves to its own thread, so reaching it with findChild to emit the real signal cannot work, and contorting the test to try was the wrong instinct. Testing a modal needed its own care. A test that sends a close event hangs forever if an unexpected dialog opens, because the modal spins its own event loop; CloseProbe polls for activeModalWidget, closes it and records that one appeared, turning "a dialog opened" into an assertion rather than a hang. Also removes a stray qDebug left in the open_thread action by the earlier Enter-key investigation, which had reached two commits. Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>
2026-08-04feat(threads): mark an opened thread read after a delayDanilo M.4-0/+135
Opening a thread left it tagged unread, so the unread count never matched what had actually been read and the app was quietly wrong every day it was used. Item 6 of the usability backlog. A single-shot timer, armed when a thread is selected and restarted rather than stacked, so arrowing down a list marks only the thread still selected when it fires and not every one passed through. Configurable through mark_read_delay_ms in [general], defaulting to 2000: zero marks read at once, and any negative value disables the behaviour, which is why the value is neither clamped nor warned about at either end. The automatic change deliberately does NOT go on the undo stack. It routes through sendThreadTagChange() rather than tagSelected(), because undoing an action the user never took is worse than leaving a thread read, and toggle_unread already gives them a direct way back. It still funnels through the single applyTags path; what differs is only whether the inverse is pushed, which is a window-level decision above the worker. An explicit toggle_unread cancels any pending timer, or marking a thread unread by hand would be reversed a moment later and the key would look broken. Two guards beyond the plan, both from asking what happens when a timer outlives the thread it was armed for. Arming is skipped for a thread that is not unread, so no write is scheduled that would change nothing, and the handler re-checks that its thread is still selected and still unread before writing, so a stale timer does nothing rather than tagging the wrong thread. The plan expected the rapid-arrow case to need a database and a manual check. It needs neither: ThreadListModel takes threads through appendBatch(), so the case is unit-tested. All three tests were confirmed to fail against deliberately broken versions, one arming for read threads and one creating a timer per selection instead of restarting one. Item 7 is closed in the same pass. The user verified against real mail that HTML messages already open as HTML, which is what the item asked for, so it is recorded as done with no code changed. The prefer_html key it floated was not added: nobody has asked to default to plain text, and Ctrl+H already switches a thread by hand. Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>
2026-08-04feat(message): show From/To/Cc and add a details dialogDanilo M.4-5/+132
MimeParser has filled To and Cc all along and HtmlBuilder simply never interpolated them, so both were parsed on every message and then discarded. The header strip showed the subject and a message count and nothing else, which is item 2 of the usability backlog. The header now adapts to what it can say honestly. A thread holding one message shows From, To and Cc under the subject, where every field is unambiguous. A thread holding several keeps showing the subject and the count alone: the recipient differs message to message, and once the user has replied there is no single address the thread is addressed to, so naming one would be a guess presented as a fact. Per-message detail is what the dialog is for. That dialog lists Subject, From, To, Cc, Date and Message-Id for every message, numbered when there is more than one, in a read-only plain-text widget. Plain text is the security decision, not a stylistic one: these values come from strangers and the dialog exists to show them verbatim, so the format that cannot interpret markup is the right one. The header label is RichText and every value interpolated into it is escaped, since an unescaped From injects into the application's own chrome rather than into the sandboxed page. Reached by a Details... button beside the subject and by Ctrl+Shift+D. Both, because a shortcut alone restates the complaint this backlog opened with. The binding is shifted because Ctrl+D is delete, and the destructive action keeps the key it already had rather than being moved to make room. An empty Cc omits its row instead of printing a label with nothing after it. Both header shapes were rendered to PNG and inspected, not only asserted. The new button also exposed a latent flaw in an older test: attachmentButtonLabels() identified attachment buttons by excluding the one other button's label, so it counted the details button as an attachment as soon as one existed. It now finds the bar by object name and reads only its children. Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>
2026-08-04feat(completion): size the description column by need, not by halfDanilo M.1-7/+26
The delegate split each row evenly between the value and its description. That reads as fair but spends the width on the wrong column: the values are short, the longest prefix being "attachment:", while the descriptions are ordinary prose. Measured against the built-in vocabulary, ten of fifteen descriptions elided at a 400px popup and the longest, "directory below the Maildir root", needed a ~650px popup to appear in full, all while the value's half of the row sat mostly empty. The descriptions are the whole reason the popup teaches the query language, so a half they cannot use is a half wasted. Measure the value and lend the description the remainder, capped at 65% of the row. Every built-in description now fits at ~500px instead of ~700px. The cap is what keeps a genuinely long value legible, and the value's own reservation is capped in turn so that "application/vnd.oasis.opendocument.text" elides itself rather than claiming the row and silencing the column that explains what it is. The test renders the real popup and reads the pixels back, since the delegate is private to the .cpp and legibility is a painting question. It asserts the painted width against the width the text needs unelided, not merely that something was drawn: a blank-or-not check passes against the very rule this replaces. 550px is chosen deliberately, being a width where the new rule paints the longest description in full and an even split cannot; against the old code it fails with "painted 261px of the 285px it needs". Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>
2026-08-04fix(query): let the query bar keep Return instead of open_threadDanilo M.2-5/+55
Pressing Return in the query bar moved focus to the thread list and left the query unrun, so a query typed at the keyboard could not be executed at all. Return is bound to open_thread as a Qt::WindowShortcut, and a shortcut is dispatched before the focused widget ever sees the key. Qt withholds a plain-LETTER shortcut from an editable widget, which is why every other binding in the map was safe here, but Return is not a letter and gets no such protection: the action fired from inside the bar, its handler called setFocus() on the thread list, and QLineEdit::returnPressed was never emitted. Accept the ShortcutOverride for Return and Enter on the query bar, which tells Qt the focused widget wants the key as ordinary input and stops the shortcut being dispatched. Narrow by design, one widget and one key, so open_thread keeps working everywhere else in the window. Three earlier hypotheses were tested and disproven before this one, and two synthetic probes wrongly reported the binding as harmless: real input sends ShortcutOverride first and only dispatches the shortcut if nothing claims it, while QTest::keyClick skips that round trip entirely. The new test drives the override exchange rather than the keystroke and fails against the old code. The comment claiming no filter was needed said the letter rule covered this case; it did not, and it now says so. Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>
2026-08-04fix(completion): stop the key filter handing itself the key it forwardsDanilo M.2-1/+18
Pressing Tab or an arrow key with the completion popup open crashed the application outright. QCoreApplication::sendEvent re-runs APPLICATION-level event filters. The navigation branch forwarded the key to the popup from inside a filter installed on qApp, so the very same event came back to the filter that had just sent it. The popup was still visible, the popupVisible() guard still passed, and it forwarded again: unbounded recursion ending in a stack overflow rather than in any diagnosable error. Reproduced at 9176 recursive QueryCompleter::eventFilter frames, with a standalone Qt probe confirming the re-entry independently. Guard the filter with m_forwarding, checked before the switch so it covers every branch rather than the navigation keys alone. A key the filter is itself redelivering now falls through to the popup instead of being claimed a second time. The existing tests missed this because they exercised the accept path without ever forwarding an event. arrowNavigationDoesNotRecurse drives Down through the grabbing popup and asserts the selection actually moved, so it fails on a fix that merely swallows the key; against the old code it takes the process down with it. Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>
2026-08-04fix(completion): filter keys on the application, not the line editDanilo M.2-3/+62
Showing the popup takes focus away from the query bar and the popup window grabs the keyboard, so keys pressed while it is up are delivered to the popup. An event filter installed on the line edit therefore never ran at the one moment it had to, leaving Tab to move focus to the next widget and Return to reach the thread list and open a message. Install the key filter on the application instead, which sees events before any widget receives them. It returns immediately unless our own popup is visible, so it cannot affect keyboard handling elsewhere. The FocusIn filter stays on the line edit, where it is correctly scoped: it only fires with the popup down. Accepting a completion now also reopens the popup when the caret lands somewhere more can be offered, so taking "tag:" goes straight on to the tag list instead of needing a second complete_query. The chain stops on a stem that is already a complete candidate, which is what every accept produces. The mouse path chains identically. The previous tests passed against the broken code because they posted events straight to the line edit, bypassing the delivery path a real keypress takes. The new tests route keys through the active popup and run against a real X display; offscreen does not grab the keyboard and cannot reproduce this class of bug.
2026-08-04fix(completion): drive the popup instead of QLineEdit::setCompleterDanilo M.2-6/+66
QLineEdit::setCompleter hands completion to the line edit, which then resets the completer's completionPrefix to the widget's entire text on every keystroke. The prefix has to be the stem, so once the query grew past its first token the whole-line prefix matched no candidate, the popup stopped appearing, and the two reported symptoms followed: nothing was there for Tab to accept, and Tab fell through to focus navigation. Attach the completer with setWidget instead, which keeps the popup anchored without ceding control of the prefix. complete() dereferences widget() unconditionally, so leaving it unset segfaults rather than degrading. Opening the popup then becomes ours to do on every edit. Extend the existing event filter to route the keys the popup needs while it is visible, and install it unconditionally now that it does more than the completion_on_focus case. Enter accepts a completion only while the popup is up, so returnPressed still runs the query when it is closed. The existing tests called acceptCompletion() directly and so never touched the widget, which is why neither bug was caught. Add four tests that drive the real widget path plus one covering both settings of completion_on_focus; the first two fail against the old code. Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>
2026-08-04feat(completion): wire query completion into the main windowDanilo M.4-1/+99
Adds the complete_query action, whose registration the assertion in registerActions() has been demanding since keymap gained the name: a known action nothing implements would have been a silently dead binding. Also lands the QueryCompleter half of the manual trigger, which the keymap commit left behind: triggerCompletion() and the focus-in filter gated on completion_on_focus. Tags refresh at startup, after a sync, and after a mutation introduces a tag not already known, since that is the tag most likely to be typed again. onAllTagsReady deliberately drops the generation the signal carries: a tag list is not an ordered query result, so a later one is always at least as good as an earlier one and discarding on staleness could only throw away a good list.
2026-08-04feat(completion): render the popup with descriptionsDanilo M.2-0/+246
The free-form date hint is a footer label rather than a model row: a row would be filtered away by the first non-matching keystroke and could be selected and inserted, producing a query that errors. QCompleter::setPopup takes a QAbstractItemView, so the label cannot be laid out beside the view in a container widget. The footer sits in space reserved with setViewportMargins inside the list view instead. setItemDelegate must run after setPopup, not before: setPopup installs a plain QStyledItemDelegate of its own and discards whatever was already set, which silently drops the description column. Accepting replaces exactly the span the tokenizer identified rather than QCompleter's own completion prefix, which is a different span once a prefix or a range bound is involved. Four tests drive that path directly instead of through synthetic key events, since whether a key needs Shift is a keyboard-layout property and could not decide the question. Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>
2026-08-04feat(completion): select candidates per contextDanilo M.2-0/+113
tag: and is: share the tag list, since notmuch aliases them. path: offers each account maildir in both bare and recursive forms, the latter being what Account::scopedQuery builds and not something a user would guess. Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>
2026-08-04feat(config): add completion_on_focus and extra_mimetypesDanilo M.2-0/+49
Mimetypes are the one completion list with no enumerator, so the user can extend it. Entries append to the built-ins and a malformed one is skipped with a problem recorded rather than dropping the whole list. Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>
2026-08-04keymap: register complete_query bound to Ctrl+SpaceDanilo M.1-0/+5
KeyMap::defaultBindings() is the single source of truth for shortcuts: the menus, the shortcut reference dialog and loadDefaults() all read it, so registering here makes the binding appear in the reference and stay rebindable from [keys] without any of them disagreeing. Ctrl+Space is a modifier plus a named key, so it sidesteps the bare capital trap in normalizeSequence() and needs no Shift on any layout. Verified it parses to a single non-empty combination that round-trips to "Ctrl+Space", and it collides with no existing default. Note test_mainwindow now fails its everyKnownActionIsRegistered() assertion: MainWindow does not yet implement complete_query. That wiring is a separate task, and the assertion firing is the intended signal.
2026-08-04feat(completion): add the prefix, date and mimetype vocabulariesDanilo M.3-0/+107
Keywords are syntax and stay untranslated; the descriptions beside them are prose and go through tr(). The tables are free functions with no QObject to inherit tr() from, so the file declares a VocabularyStrings context with Q_DECLARE_TR_FUNCTIONS rather than borrowing QObject::tr, which would file every string under the QObject context.
2026-08-04feat(worker): list every tag in the databaseDanilo M.2-0/+27
Query bar completion cannot offer tag names without a way to enumerate them, and libnotmuch had no call wired up for it. Follows the existing generation-counter pattern; the result crosses the thread boundary as a QStringList. Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>