1.5.0

Stability & data-integrity release. Fixes the data-loss and crash blockers found in a pre-submission audit. No new user-facing features — every change here protects your files.

Fixed

• Cross-file undo data loss (critical). The undo history was not reset when you switched files in the same pane, so Cmd/Ctrl+Z in file B could restore — and save — file A's content over it. The same path silently reverted external/sync changes. History (and the schema, search query, and forced source mode) is now reset per file.
• Large trees were clipped. A .json-content { max-height: 5000px } cap hid everything past roughly 200–250 expanded rows with no scrollbar. Removed.
• Plugin death on .json conflict. If another plugin already handled .json, registerExtensions threw and the whole plugin failed to load (losing code-block rendering, settings, and commands). The claim is now guarded; on conflict you get a notice and code-block rendering keeps working.
• Lost place after every edit. Re-rendering the tree reset manual expand/collapse, scroll position, and keyboard focus. These are now preserved across edits; after a delete, focus moves to the next sibling.
• Big-integer corruption. Editing a number to a value beyond 2^53 silently truncated it; the tree editor now rejects such input (use source mode for big integers).

Changed

• Schema validation is now opt-in (validateAgainstSchema defaults to false). A companion *.schema.json was previously auto-loaded and compiled on every file open; a malicious schema in a shared/synced vault could freeze Obsidian via a catastrophic-backtracking regex (ReDoS). Enable it explicitly if you trust your schema files. compileSchema now also rejects oversized schemas and obvious nested-quantifier patterns, and a stale companion-schema load can no longer apply to the wrong file.

Added

• Lossy-number warning. When a file contains integers JSON can't represent exactly (e.g. 64-bit IDs > 2^53), a banner appears and the tree opens read-only so a tree edit can't silently rewrite them; source mode stays editable.

Internal

• All innerHTML = "" DOM clears replaced with replaceChildren() (Community-Hub submission-gate requirement); a regression test enforces it across the source tree.
• Test count 402 → 478 (+76), all green; build and Biome lint clean.