Lightman's Currency:Claim Economy

[4.2.1]

Fixed

• Free-allowance chunks paid out an unclaim refund they were never charged   for, on both backends:   - OP&C (OpcClaimEconomyListener.handleUnclaim) refunded on every     unclaim unconditionally - it never checked the free-chunk allowance at     all, unlike the claim side right above it which does. A chunk claimed     for free within freeChunks still paid out a refund when unclaimed,     manufacturing money from nothing.   - FTB Chunks (ChunkClaimHandler) had a subtler version of the same bug:     ChunkTeamData.getClaimedChunks() caches its result, and FTB Chunks'     own unclaim() only invalidates that cache after firing the     AFTER_UNCLAIM event this mod listens on - confirmed by decompiling the     installed FTB Chunks jar. Reading the team's claimed-chunk count from     inside that listener could return a stale, pre-removal count, tipping     the free-allowance comparison the wrong way. Fixed by counting from the     claim manager's own live (uncached) chunk collection instead of the     per-team cached one.
• Mod refused to load against any FTB Chunks/OP&C release newer than the   exact point version this mod was built against, even though   neoforge.mods.toml already declares an open-ended [X,) version range   for both. ModCompatibility.requireExactVersion did a hard string-equality   check independent of that declared range, so every routine FTB Chunks or   OP&C bugfix release (e.g. 2101.1.20 -> 2101.1.21) broke this mod's loading   entirely with an IllegalStateException until it was manually re-pinned   and republished. Replaced with requireMinimumVersion, a proper   DefaultArtifactVersion comparison matching the toml's own minimum-version   intent - Lightman's Currency (a required, API-heavy dependency) still gets   an exact-match check, since a version bump there is far more likely to   carry an actual breaking change. Bumped the pinned ftb_chunks_version to   2101.1.21 to match what's actually current.