Core and desktop comments describe the code to a stranger (#6224)

Milestone 546 "Bring the repo to the comment standard (rule 32) and
compose defaults (rule 198)", step #6224 "Comment standard sweep: Rust
core and desktop client".

Doc comments and comments across inkwell-core, the Tauri app and
desktop/packaging now say what the code does and the non-obvious why in
the present tense. Gone: milestone tags (M10.x, M11.3, M13, M304, M315,
M314, milestone 325), issue and Scribe-note numbers, family-idea and
family-rule citations, the run numbers and commit hashes behind past
bugs, and the narration of what used to be (the stable channel before it
held its own bundles, CARGO_PKG_VERSION as the shown version, the
MANIFEST_TAG split, the store's missing tests, the old PKGBUILD). The
schema's migration notes keep what each step does and why, without
"until now". The forge is called the forge rather than Forgejo.

Hazards stay as facts: the dev-rolling tag that must not shadow the
branch, the manifest matched on this build's version, the APK's fixed
name surviving the prune, the LIKE guard in v9, -wal/-shm moving with
the renamed store, panic = abort ending the app.

34 files, comments only: a comment-stripping diff of every changed file
against HEAD is identical.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

core/Cargo.toml

@@ -9,15 +9,15 @@ edition = "2021"
 serde = { workspace = true }
 serde_json = { workspace = true }
 log = { workspace = true }
-# Local-first store (M10.4): bundled = compile SQLite in, so there's no system
+# Local-first store: bundled = compile SQLite in, so there's no system
 # libsqlite dependency to vary across the AppImage / native / Windows / Android builds.
-# functions = the `fold` SQL function tag names are compared and indexed by (#5385):
+# functions = the `fold` SQL function tag names are compared and indexed by:
 # SQLite's own lower() folds ASCII only, and the server folds every letter.
 rusqlite = { version = "0.32", features = ["bundled", "functions"] }
 uuid = { version = "1", features = ["v4"] }
 # RFC3339 timestamps for created_at/updated_at/remind_at (Date.parse-able on the JS side).
 chrono = { version = "0.4", default-features = false, features = ["clock"] }
-# HTTP for the opt-in server handshake (M10.6) and the sync engine (M10.7).
+# HTTP for the opt-in server handshake and the sync engine.
 #
 # native-tls, NOT rustls, deliberately: on x86_64-pc-windows-msvc native-tls resolves
 # to `schannel` — pure-Rust bindings to the OS TLS stack — so nothing C or assembly
@@ -43,12 +43,11 @@ flate2 = { version = "1", default-features = false, features = ["rust_backend"]
 # Without this the build dies at `openssl-sys`: "Could not find directory of
 # OpenSSL installation".
 #
-# `vendored` compiles OpenSSL from source with the NDK toolchain. The alternative
-# was rustls on Android only, which builds faster — but rustls ships its own root
-# store, so the phone would trust a DIFFERENT set of certificates than the desktop
-# does. A self-hosted server behind a private or enterprise CA would then work on
-# one surface and fail on another, and "the surfaces behave the same" is worth more
-# than build minutes.
+# `vendored` compiles OpenSSL from source with the NDK toolchain. Not rustls on
+# Android, though it builds faster: rustls ships its own root store, so the phone
+# would trust a DIFFERENT set of certificates than the desktop does, and a
+# self-hosted server behind a private or enterprise CA would work on one surface
+# and fail on another.
 #
 # Declared as a direct dependency purely to turn the feature on: cargo's feature
 # unification applies it to the copy `native-tls` pulls in transitively.