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2026-08-07feat(ui): add a Maildir overview under HelpDanilo M.1-0/+14
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.
2026-08-04feat: show a paperclip for threads with attachmentsDanilo M.1-0/+7
An attachment was only discoverable by opening the thread. A narrow leftmost column now marks the threads that carry one. No new worker query is involved: notmuch applies the "attachment" tag while indexing, so ThreadSummary already holds what this needs. The marker is a glyph rather than an icon resource, which ships no new asset and inherits the row font, so it strikes through with a doomed thread like every other cell. It falls back to "*" where the system font cannot draw U+1F4CE, since an unrenderable codepoint reads as breakage rather than as a marker. Two silent Qt behaviours had to be handled, both found by probe: QHeaderView::restoreState() returns true for a blob saved against fewer columns and applies the old widths shifted one place right. Adding a column in front would therefore have mangled every existing saved layout with no error to detect it by. The column count is now stored beside the blob and a mismatch discards it, so the widths reset once on upgrade instead of landing on the wrong columns. QHeaderView's default minimumSectionSize is 58px on this platform, and setColumnWidth() clamps to it without reporting the smaller value back, so the column could not be narrow at all until it was lowered. Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>
2026-08-04feat: show that a tag action landedDanilo M.1-0/+7
Selecting a thread and hitting Delete changed nothing on screen, so there was no way to tell the action had stuck. The tag was always applied: applyTagChange() emitted dataChanged across the row, and the Tags column did update. But Subject was set to stretch while Tags came after it, so Subject took all free width and pushed Tags out of view. The feedback lived in the one column that could not be seen. Columns are now Tags, Date, From, Subject, with Subject stretching last so nothing can be pushed off the right edge. A thread tagged deleted or spam fills its whole row, muted red or orange with white struck-through text, through the background, foreground and font roles, so no cue depends on one column remaining visible. Strike-through accompanies the fill on purpose: it survives a theme that overrides backgrounds and reads without colour. Bold for unread still composes with it. Archive adds no tag, so an archived row is left unstyled for now.
2026-08-04Add GPLv2-only license and per-file headersDanilo M.1-0/+18
Confirmed with the maintainer as v2-only rather than v2-or-later. LICENSE is the official text from gnu.org. Every file under src/ and tests/ carries the matching notice. Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>
2026-08-04feat: add cross-thread value types and notmuch RAII wrappersDanilo M.1-0/+51
ThreadSummary, MessageRef, and TagChange are plain-value structs that carry query results across the worker/UI thread boundary via queued signals. NmHandle<T, Destroy> wraps libnotmuch's C handles (query, threads, messages, thread, message, tags) so early returns in the query paths can't leak.