v0.2606.0

Initial public release.

🚀 Features

• Named memory zones over any backing allocator, tracking live bytes, peak, and alloc/free counts with no per-allocation metadata.
• Three modes (.full, .guardrails, .off) selected by app-owned policy (gdt_ledger_options + gdt_ledger_runtime). .off is void-eliminated to zero bytes and compiles down to the bare backing allocator.
• Per-zone hardcap (a hard ceiling that fails the overspender's allocation, with overflow-safe checks) and budget (a soft gauge that may read past 100%).
• Hierarchical subzones: a child's allocations chain through and count into its parent, and the child's effective mode is clamped to the parent's (min(parent, child)).
• Scope rules resolve a zone's mode by longest-prefix match, so an application can dim or brighten a dependency's zones without touching its code.
• Per-frame allocation deltas via markFrame (.full only).
• Specialized wrappers that meter what a plain zone would misrepresent: ZonedArena (retained arena pages), ZonedPool (pool backing storage), ZonedFixedBuffer (fixed-buffer footprint), and ZonedDebug (the zone verdict plus the embedded std.heap.DebugAllocator's leak check, both from one deinit).
• Runtime registry with text and JSON dumps (dumpToWriter, dumpToJson, snapshot, zoneCount) over the live .full zones.
• Comptime validation: unknown option or rule fields, duplicate scopes, dead rules, and misuse (subzone init, fixed-buffer subzones, and the like) are build errors, not runtime surprises.

📅 Versioning

• CalVer 0.YYMM.patch. Zig pins dependencies by hash, not by range, so the number is for humans: 0.2606.0 reads as June 2026.

📦 Compatibility

• Requires Zig 0.16.0 or newer. Zero dependencies.