chore: release Anvil 0.4.0, Lathe/Temper/Knurl 0.3.0, Planish/Braze/Ballast/Forge 0.2.0, Crucible/Weld 0.4.0

The producer-feedback round: stable note tracking, the NOTE pitch source with
Key lock and Follow bends, unsure-means-neutral fallbacks, Anvil's Enhance
mode, MAIN and ADVANCED pages, Ballast on Grid by default, and Crucible's
sure-note slice names with a song key.

Adds docs/pitch.md for the shared pitch source, updates every changed
plugin's README and changelog, the release table, the editor previews, the
website bullets, and the status in docs/ideas.md.

docs/crucible/CHANGELOG.md

@@ -1,5 +1,13 @@
 # Crucible changelog
 
+## 0.4.0
+
+- A slice is named by a note only when at least three in five pitch reads over
+  its body agree on it. Growls, slides and noise are saved without a note
+  instead of with a wrong one.
+- Add the song **Key**: slice names use its spelling, such as Ab instead of G#.
+  Without a key, names use sharps as before.
+
 ## 0.3.0
 
 - **Keep takes** (on by default) saves every capture's loop to a `takes`

docs/crucible/README.md

@@ -1,7 +1,7 @@
 # Crucible
 
 Crucible melts the bars you just played into ready-to-use samples. Current version
-**0.3.0**.
+**0.4.0**.
 
 Resampling is the core loop of riddim sound design: bounce, open in Edison, chop,
 trim, declick, normalise, find the key, name, save, load into a sampler. Crucible
@@ -33,7 +33,11 @@ Each export creates a folder named after the date, time and tempo, holding:
 
 - `loop.wav`: the whole take, for Slicex or Edison;
 - `s01_F1.wav`, `s02_G#1.wav`, …: one file per slice, named by its detected root
-  note. The root is also stored in the file's sampler chunk;
+  note. The root is also stored in the file's sampler chunk. A slice gets a
+  note only when most of it holds one clear pitch; a growl, a slide or noise is
+  saved as `s03.wav`, because a wrong note name is worse than none. Choose the
+  song's **Key** to spell the names in it: in F minor a slice is `s02_Ab1.wav`,
+  not `s02_G#1.wav`. Without a key, names use sharps;
 - `wavetable.wav` when **Wavetable** is on: up to 256 single-cycle frames of 2048
   samples from the selected slice. Each frame starts on a rising zero crossing, so
   frames morph without phase jumps. Serum reads the frame size from the file; in
@@ -58,6 +62,8 @@ default), every capture's loop is also written at once to
 or a crash loses nothing. Existing files are never overwritten.
 
 Bar alignment follows the host's song position and time signature. Root notes are
-detected between 35 Hz and 1 kHz. Unpitched slices, such as drums or noise, get
-no note in their name. Transient slicing finds hits that rise out of quieter
+detected between 35 Hz and 1 kHz. The pitch is read at up to 12 points across
+each slice after its attack; at least three reads in five must be clear and on
+the same note. Unpitched slices, such as drums
+or noise, get no note in their name. Transient slicing finds hits that rise out of quieter
 audio; for legato basses, slice on the grid.