Closes the editing loop on the spell-duration bucket catalog: dump
a .wsdr to JSON, hand-edit baseDurationMs / perLevelMs / clamp /
durationKind (e.g. retune Renew from 9s to 10s base across every
spell that references the HoT5Tick bucket), re-import to a
byte-identical binary. The exporter emits both durationKind (int
0..4) and the human-readable durationKindName ("instant", "timed",
"tick", "until-cancelled", "until-death"); the importer accepts
either, so JSON sidecars stay readable without losing the
canonical binary encoding.
Verified byte-identical round-trip on all three presets
(starter / buffs / dot). CLI flag count 904 -> 906.
Open replacement for SpellDuration.dbc plus per-spell duration
fields in Spell.dbc. Defines the categorical duration buckets
that auras / DoTs / HoTs / buffs reference (5s / 30s / 5min / 1hr
/ UntilCancelled / UntilDeath).
Together with WSRG (range) and WSCT (cast time), this completes a
small triplet of spell-metadata catalogs: instead of every
Frostbolt rank embedding its own range, cast time, and
chill-debuff duration as duplicate fields, each spell holds three
small integer ids that resolve through these three tables. The
engine retunes thousands of spells at once by editing one bucket.
Duration scales with caster level via perLevelMs (a rank-1 Renew
at 9s grows to 12s at lvl 60), then is clamped to maxDurationMs.
Negative baseDurationMs is the canonical sentinel for "no timer"
(UntilCancelled / UntilDeath); resolveAtLevel returns -1 for
those so HUD code can render the indefinite-duration glyph.
Three preset emitters: --gen-sdr (5 baseline tiers from instant
to one-hour), --gen-sdr-buffs (4 long-duration buffs including
UntilDeath), --gen-sdr-dot (4 tick-based DoT/HoT buckets at 3s
ticks). Validation enforces base>0 for Timed/TickBased, base<0
for permanent kinds, max>=base, durationKind 0..4, no duplicate
ids, and warns on Instant+nonzero base.
Wired through the cross-format table; WSDR appears automatically
in all 9 cross-format utilities. Format count 69 -> 70; CLI flag
count 899 -> 904.
