Task 2 of the backup-classification-redesign arc. Ships the referential-
coupling classification as DATA + PARSER + PURE CLASSIFIER, deliberately
inert — no backup tier changes behavior. Task 3 (tier policy engine) and
Task 4 (manual .fab UI) consume it.
- appbackup/classify.go: BackupSpec/BindSpec/ComposeBind/ClassifiedBind;
ClassifyBinds (SQ5 two-level default — explicit beats :ro; unlisted
writable→mandatory, unlisted :ro→excluded; nil spec→legacy/false);
ValidateBackupSpec (whole-block-reject on any defect, first defect named).
- stacks/classify_binds.go: ParseComposeClassifiableBinds — ${VAR}-relative
binds + :ro flag (NOT ParseComposeHDDMounts/ExportDataMounts, the traps).
- Metadata.Backup + LoadMetadata as the single validation choke point (bad
catalog block → nil + one ERROR → legacy, within one sync cycle).
- Manager.ClassifiedBinds + StackDataProvider.GetStackClassifiedBinds seam
(delegated by stackAdapter, nil-stubbed in every fake) — wired + tested
now so Task 3 consumes a tested seam.
INERT: full pre-existing suite green with zero test-logic edits. +14 tests;
red-proofs RP-1..RP-4 confirmed. The 13 catalog backup: blocks ship in the
same app-catalog change (this controller deploys first).
Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01A45Qop8YY8tS94bz63LFne
The controller assumed an app's HDD appdata dir is always appdata/<stackName>.
paperless-ngx writes appdata/paperless (stack paperless-ngx), so every consumer
keying by stack name silently missed it via a stat-and-skip. One canonical
resolver appbackup.AppDataDirNames derives the real dir name(s) from the app's
compose ${HDD_PATH} binds; all consumers use it.
- F-S2 (tier-2): RunTier2 mirrors the resolved appdata/<name> (paperless docs
got NO tier-2 copy before). Tier2Info size + RestoreTier2Files live dir use it.
WARN when a declared appdata dir is absent. New tier2Mirror seam.
- F-S3 (migrate, NEW): all six per-app appdata legs (collision/size/copy/verify/
cleanup/skip-set) now loop resolved names. scope="app" migration of paperless
previously copied nothing and left an empty media dir (scope="all" was saved by
the merge walk). WARN on missing declared dir in the copy leg.
- Multi-dir (N>1) refusal: tier-2 backup/info/restore refuse loudly (Hungarian);
migrate supports N. No catalog app hits it today; lifted by Task 3.
- Display: storage page sums resolved dirs.
- Truth repair: the v0.130.0 "tier-2 copies the namespace wholesale" claim is
false; corrected in CHANGELOG + main.go export-adapter comment.
+9 tests; red-proofs RP-1..RP-5 all confirmed. Controller-only, no agent/hub
coupling. Task 1 of the backup-classification-redesign arc.
Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01A45Qop8YY8tS94bz63LFne
Closes the engine half of drill finding F2: user files under appdata/<stack>
had no customer recovery path (operator copy-back only).
- RestoreTier2Files(stack): single-flight with backup/restore; ALL refusals
before any stop (no Tier-2 record / LastRun empty / copy dir absent →
"nincs másodlagos fájlmásolat"; Tier-2 drive disconnected; live drive
disconnected/decommissioned — Hungarian, flash-ready); source is the
RECORDED CrossDriveBackup.DestinationPath (never a fresh selectTier2Target);
stop → copy → start → waitForHealthy; copy/restart errors surface (F17).
- rsyncRestoreMissing: rsyncMirror's exec shape with the OPPOSITE-direction
flags: -a --ignore-existing --itemize-changes — existing live files are
never overwritten, nothing is ever deleted (the --delete trap this task
exists to avoid). Count = ">f" itemize lines (pure countRestoredFiles).
- restoreFilesCopier seam so orchestration tests never shell out; the one
FS-level test of the real rsync is LookPath-guarded (runs on the Linux
build server + live validation).
Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01PSK5g6qYLknKj8u3QAFEr6
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