update doc and release 4.1.0

doc/CHANGELOG.md

@@ -7,6 +7,31 @@ Versions follow `MAJOR.MINOR.PATCH-REVISION_STAGE_N` (e.g. `3.99.1-4_rc_1`).
 
 ---
 
+## [4.1.0] — 2026-05-07
+
+### Added
+- `profile.sh --install` command to automatically configure profile loading in
+  shell startup files.
+- `--install --bashrc` and `--install --profile` target selectors for
+  single-file installation.
+- **`git.sh`** — entirely new module providing git workflow helpers: `gst`,
+  `ggraph`, `gsync`, `gacp`, `greset`, `gwip`, `gprune`, `groot`.
+- Dedicated git helper completions under `profile.d/bash-completion/`, loaded
+  automatically in interactive sessions from `profile.d/bash-completion/*.sh`.
+
+### Changed
+- `disp` now wraps long messages on terminal width, avoids mid-word splits, and
+  aligns continuation lines with the message body after the prefix.
+- `help` now supports `help <command>` and delegates to `<command> --help`.
+
+### Fixed
+- Startup responsiveness improved: `check_updates -q` now uses a short network
+  timeout so unavailable/slow networks no longer delay prompt readiness.
+- `dwl` gained timeout support (`-t` / `--timeout`) and is now used by quiet
+  startup update checks to enforce fast failure.
+- `profile.sh` now detects direct execution and warns that it is designed to be
+  sourced.
+
 ## [4.0.0] — 2026-04-23
 
 ### Added