docs: the legacy project was DeepSeek-TUI, not "DeepSeek CLI"

Both LICENSE files and one app-server doc comment attributed copyright to
"DeepSeek CLI Contributors" — a project name that never existed. The
founder confirmed the lineage is DeepSeek-TUI, which is also what the
retained legacy npm package is called (npm/deepseek-tui, kept private and
never republished).

This corrects a project name, not the license. Verified: with line 3
removed, both LICENSE files are byte-identical to their previous contents,
so the MIT text, the year range and the copyright holder shape are
untouched.

Deliberately NOT changed, because they are not attribution:
- crates/tui/src/tools/review.rs — `deepseek-ai/deepseek-cli` is a test URL
  for the PR-URL parser
- crates/cli/src/lib.rs — `deepseek-cli-auth-*-test` are temp filenames
- npm/deepseek-tui/package.json — the deprecated legacy package name

Co-Authored-By: Claude Opus 5 (1M context) <[email protected]>
Claude-Session: https://claude.ai/code/session_01D4rk4NXwyy6wmvii9Lp84P
Signed-off-by: CodeWhale Bot <[email protected]>
(cherry picked from commit 18d5f95edd)

LICENSE

@@ -1,6 +1,6 @@
 MIT License
 
-Copyright (c) 2024-2025 DeepSeek CLI Contributors
+Copyright (c) 2024-2025 DeepSeek-TUI Contributors
 
 Permission is hereby granted, free of charge, to any person obtaining a copy
 of this software and associated documentation files (the "Software"), to deal

crates/app-server/src/lib.rs

@@ -36,7 +36,7 @@ pub mod daemon_socket;
 
 /// Legacy DeepSeek-era naming kept for external compatibility.
 ///
-/// CodeWhale began life as a DeepSeek CLI; existing health probes, SDK
+/// CodeWhale began life as DeepSeek-TUI; existing health probes, SDK
 /// harnesses, and on-disk layouts still key off these names. Every remaining
 /// legacy reference in this crate routes through this shim so a future
 /// coordinated migration touches exactly one place (repo policy: preserve

extensions/vscode/LICENSE

@@ -1,6 +1,6 @@
 MIT License
 
-Copyright (c) 2024-2025 DeepSeek CLI Contributors
+Copyright (c) 2024-2025 DeepSeek-TUI Contributors
 
 Permission is hereby granted, free of charge, to any person obtaining a copy
 of this software and associated documentation files (the "Software"), to deal