recovery: audit fixes — live at-risk excludes NonTried, latency-gated wedge, drop dead block counters

- Live located drilldown (sweep + patch progress snapshots) now excludes
  NonTried, matching the one-shot path. Including the unread remainder made
  main_at_risk_ms show ~full-movie at sweep start and melt to 0 as it
  progressed — unread is unknown, not damage.
- Wedge abort now requires the failure to be FAST (< WEDGE_FASTFAIL_MS,
  500ms) as well as wedge-family sense: a real uncorrectable sector on
  Hardware-error media spends ECC-recovery time before failing, so it no
  longer false-trips the fast-fail wedge abort. New regression test.
- Removed the always-zero blocks_attempted/read_ok/read_failed/
  unreadable_count from PatchOutcome + PatchLoopState (dead residue from
  the old grind loop; the HandlerScoreboard supersedes them) so the
  patch.done log no longer emits misleading zeros.

src/disc/mod.rs

@@ -2930,9 +2930,6 @@ impl Disc {
         tracing::info!(
             target: "freemkv::disc",
             phase = "patch_done",
-            blocks_attempted = pr.blocks_attempted,
-            blocks_read_ok = pr.blocks_read_ok,
-            blocks_read_failed = pr.blocks_read_failed,
             bytes_recovered = pr.bytes_recovered_this_pass,
             halted = pr.halted,
             wedged_exit = pr.wedged_exit,
@@ -3870,9 +3867,6 @@ pub struct PatchOutcome {
     pub bytes_pending: u64,
     pub bytes_recovered_this_pass: u64,
     pub halted: bool,
-    pub blocks_attempted: u64,
-    pub blocks_read_ok: u64,
-    pub blocks_read_failed: u64,
     pub wedged_exit: bool,
     pub wedged_threshold: u64,
 }