[matanlurey]

Three unrelated documentation-accuracy fixes bundled together per maintainer instruction, since none of them require code behavior changes.

#452: README described retroglyph-widgets' old free-function architecture

The Widgets section (and the crate table's one-line description) said every widget is a free function (panel, gauge, table, sparkline, draw_box, ...). That's stale: every widget is a builder struct (Panel, Gauge, Table, Sparkline, BoxBorder, List, Tabs, Button, Scrollbar, ProgressBar, Modal, StatBar, Meter, Log) that draws itself via Widget/StatefulWidget, matching crates/widgets/src/lib.rs's own doc comment and crates/widgets/README.md. Rewrote both README sections to describe the current shape. crates/widgets/AGENTS.md was already accurate and needed no change.

#451: README advertised Style text modifiers and Terminal::modifier() that don't exist

The Grid API and Stateful drawing API sections claimed cells carry text modifiers (bold/italic/underline/...) and that modifier() is a method alongside fg()/bg(). Style (crates/core/src/style.rs) has only fg/bg fields; no modifier field or method exists anywhere in the workspace. Removed both false claims and added a short explanation of the no-modifier-by-design rationale, pointing at Style's own doc comment for the full reasoning. No code change: per the issue, deleting the false claims is the resolution regardless of the separate text-attributes design question.

#466: docs.rs showed no feature badges, gated items looked unconditionally available

Every crate already set all-features = true under [package.metadata.docs.rs] but none set rustdoc-args, so docs.rs never enabled cfg-based feature badges. Added to all 8 publishable crates:

[package.metadata.docs.rs]
all-features = true
rustdoc-args = ["--cfg", "docsrs"]

and to each crate's lib.rs:

#![cfg_attr(docsrs, feature(doc_cfg))]

Deviation from the issue's literal snippet: the issue asked for feature(doc_auto_cfg))], but on current nightly that feature has been removed and merged into doc_cfg (rustc note: "removed in 1.92.0 ... merged into doc_cfg", see rust-lang/rust#138907). doc_cfg now auto-infers cfg badges from #[cfg(feature = ...)] the same way doc_auto_cfg used to, so this uses the current feature name to keep the badge generation working against the nightly docs.rs builds against today, rather than shipping something that would silently stop compiling on their pinned toolchain.

Also added just doc-docsrs (RUSTDOCFLAGS="--cfg docsrs" cargo +nightly doc --all-features --no-deps --open) matching the issue's requested verification recipe.

Verification

• just doc-docsrs run locally on nightly-aarch64-apple-darwin (rustc 1.98.0-nightly): full workspace builds clean under --cfg docsrs.
• Confirmed the "Available on crate feature X only" badge renders on the generated HTML for all five items called out in the issue:
  • retroglyph_core::layout (module) -- egc
  • retroglyph_core::grid::BlendMode -- gem
  • retroglyph_core::app::run_blocking -- std
  • retroglyph_software::tileset (module) -- tilesets
  • retroglyph_widgets::widget::Paragraph -- egc
• cargo check --workspace --all-features on stable: clean, confirming cfg_attr(docsrs, ...) is a no-op off nightly.
• just check (fmt-check, clippy -D warnings incl. pedantic/nursery, compile, 878 tests, doc): all green.

Fixes #452
Fixes #451
Fixes #466