chore(main): release 0.4.0

[github-actions]

🤖 I have created a release beep boop

0.4.0 (2026-08-10)

Features

• backup: add additive category/tags/tracker restore from export (0f4bf77)
• qbit-core: add pure parsers for operator-typed quantities (0acc9c9)
• qbit-core: add the composable selection model and its validation (e9627e1)
• qbit-core: evaluate every cheap selection predicate (77b4ffd)
• qbit-core: report field absence explicitly for bounded predicates (4a30f38)
• selection: close the last filter gaps and drop the TUI refresh debt (e8d3699)
• selection: filter by completion date, on the observed -1 sentinel (ad6a7ef)
• selection: filter by inactivity, on observed last_activity semantics (78d4d18)
• torrents: accept the composable filters on every bulk mutation (dd06b67)
• torrents: add .torrent import (file/dir/zip) via WebUI API (1446ca3)
• torrents: add HIGH-risk destructive torrents delete (701c549)
• torrents: expose the composable cheap filters on torrents list (ef75be3)
• torrents: filter by tracker presence and excluded tracker hosts (2e6d51d)
• torrents: serialize the composable filters and repeat --tracker (91918c1)
• trackers: scope add-if-present with torrent filters (62490ab)
• trackers: scope every tracker operation with the composable filters (5701be1)
• tui: add instance-wide lifetime stats to the Overview panel (72a1599)

Bug Fixes

• qbit-core: case-insensitive dedup and blank-hash validation in hash-based ops (c5f2fe1)
• selection: make tracker filters crash-proof and selection uniform (17599df)
• test: run matrix containers as the host user, not a hardcoded uid (df68ea8)
• trackers: stop counting DHT/PeX/LSD as trackers (cb2e059)

Documentation

• add philosophy (817e7a8)
• add public product roadmap (0582b2d)
• readme: add a how is qbit-ops different section (bd18a1f)
• readme: add link to roadmap (6539dd9)

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