Svarog 4.20.3 Profile POWER redefined as mean power per epoch (µV²); IDE4EEG-emitted tags carry a new energy attribute the new path reads, with a fallback for legacy tags. BookReporter plugin removed — EmbeddedProfilePanel is now the single profile viewer. --channel synthesizes a source-derivation fallback when the named channel isn't in the default montage. Atom tooltip + table redesigned with bracket-unit headers and per-column decimal precision; energy formula corrected to modulus²/fs (µV²·s). New wiki concept-mp-book.md + contract C-BOOK-1. See log.md 2026-06-07 for the full release entry.