veetee 0.6.0

Milestone M6 (keyboard and OpenVMS applications) and the first part of M7 (fonts), and the first
Windows build. M5 (RFC 2217 and LAT) is still to come.

• --phosphor white|green|amber selects the phosphor colour at start.
• Keyboard (M6): the PC-to-LK401 map is a TOML keymap with a visual Keyboard Map editor
  (~/.config/veetee/keymap.toml, --keymap FILE); VT500 modified function, editing and cursor
  keys send DECFNK sequences; Ctrl with the cursor and Prev/Next keys pans through page memory.
• VT520 key programming: DECPFK, DECPAK, DECCKD, DECPKA, DECRQKD with DECRPFK/DECRPAK,
  DECRQPKFM and DECRQKT, by LK411 key station; programmed local functions run veetee's own.
• Session recordings: --record writes .vtrec recordings with checkpoints (Ctrl+Shift+M),
  leaving typed keys out unless --record-keys is given; vt-headless replay and
  cargo xtask openvms compare checkpoint screens.
• Glyph dots are box-filtered, so strokes keep an even weight at any window size.
• Fonts (M7): the VT320, VT420 and VT500 series draw with new original fonts on DEC's
  character cells: 10×16 dots for 80 columns and 6×16 for 132 columns at 24 lines, 10 and 8
  dots high at 36 and 48 lines (EK-VT420-RM table 5-5). The page has the proportions of their
  800×400 raster of 1:1.4 pixels, with one scan line per dot row. The fonts cover DEC Greek,
  Hebrew, Turkish and Cyrillic and the ISO Latin-2, Greek, Hebrew, Cyrillic and Latin-5 sets.
  132-column mode uses the narrow font instead of squeezing the 80-column glyphs. Screen sizes
  without a hand-drawn font, and 132-column VT100/VT220 text, are resampled so separate strokes
  stay separate. VT52–VT220 keep the 10×10 font.
• Fixed: keypad digits, ., /, * and − went to the input method as text, so EDT and EVE
  received digits instead of application keypad sequences; host-programmed main keypad keys
  (DECPAK) were bypassed the same way. veetee now handles mapped keys first.
• Windows: a zip for 64-bit Windows 10 (1809) and later, with the GTK runtime included. Local
  command windows run on a Windows pseudo console (ConPTY), SSH uses Windows' OpenSSH client and
  serial lines use COM ports. CI builds and tests on Windows.
• Project website in site/, published with GitHub Pages; screenshots are regenerated from
  veetee's renderer with site/capture/capture.sh.

veetee 0.4.0

Milestone M4: the VT510, VT520 and VT525.

Emulation

• VT510/VT520/VT525: CHA, HPA, VPA, HPR, VPR, CNL, CPL, CHT, CBT;
  DECST8C; cursor styles (DECSCUSR); DECNCSM; the VT500 private modes; Set-Up selections with
  DECRQSS reports; DECTID, DECTME, DECSR; answerback, banner and time-of-day loading; session
  names as the window title (DECSWT); VT500 page and screen sizes; keyboard language, local
  function key and local function controls; DECES, DECUS, DECSPMA; DECPS parsing.
• VT525 colour: SGR colours, DECAC, DECATC and alternate text colour modes, DECSTGLT,
  DECCTR/DECRSTS colour tables in RGB or HLS, DECECM, DECBBSM.
• Dual sessions: --sessions 2 or Open Second Session splits the window into two
  sessions with their own connections; F4 (Session) switches the keyboard, DECES activates a
  session, session names from DECSWT label each half and title the window.
• VT500 character sets: DEC Greek, Hebrew, Turkish and Cyrillic; ISO Latin-2, Greek, Hebrew,
  Latin-Cyrillic and Latin-5; Greek, Hebrew, Turkish, Serbo-Croatian and Russian NRCS.
• Replies sent before a reset in the same data are no longer lost.

Development

• vttest 11.4 scripts; esctest2 runs at VT level 5 against a VT525. Screen snapshots show colour
  indexes.

veetee 0.3.0

The first release: VT100 through VT420 emulation with local, Telnet, SSH and serial connections.

Emulation

• VT100/VT102/VT52 — cursor control, scrolling regions, tabs, double-width and double-height
  lines, DEC Special Graphics, insert/delete, screen alignment, VT52 mode; vttest menus 1–8 pass.
• VT220/VT320 — 8-bit controls and DECSCL levels; G0–G3 with locking and single shifts;
  national replacement character sets, DEC Supplemental, DEC Technical, ISO Latin-1 and the
  user-preferred supplemental set; soft fonts (DECDLD); user-defined keys (DECUDK); protected
  fields with selective erase; indicator and host-writable status lines; DECRQM, DECRQSS,
  DECRQPSR/DECRSPS and other reports; vttest 11.1 and 11.2 pass.
• VT420 — left/right margins; DECIC/DECDC and DECBI/DECFI; rectangular area operations
  (DECCRA, DECERA, DECSERA, DECFRA, DECCARA, DECRARA, DECSACE); DECRQCRA checksums matching the
  hardware; page memory with page movement, DECSLPP, DECSCPP and 24/36/48-line screens (SU/SD
  pan as on DEC terminals); macros (DECDMAC/DECINVM); terminal state reports (DECRQTSR/DECRSTS);
  vttest 11.3 passes.
• Models VT100, VT102, VT220, VT320 and VT420 (default); VT510/VT520/VT525 identify themselves but
  add no VT500 features yet.
• DEC factory defaults throughout; xterm behaviour is an opt-in extension used for esctest2.

Application

• GTK4/libadwaita window with an OpenGL renderer: original DEC-style bitmap font, dot stretching,
  scan lines, 132-column mode, soft fonts, blinking, white/green/amber phosphors, full screen.
• LK401 keyboard layout on PC keyboards, including PF1–PF4, the editing keypad, Help/Do, F6–F20,
  user-defined keys, Hold Screen, Break and Answerback.
• Mouse selection (word selection understands VMS file specifications), primary selection,
  clipboard copy and paste.
• Connections: local shell or command (PTY); native Telnet with binary mode, terminal type, window
  size and BREAK; SSH through the system OpenSSH client; serial lines with picocom-style options,
  DEC default 9600 8N1 XON/XOFF, and line break. Network and serial windows stay open after the
  connection closes.
• --record saves host output for bug reports and replay.

Development

• vt-headless session scripts with golden screen snapshots; cargo xtask vttest and
  cargo xtask esctest against pinned upstream versions, run in CI together with unit tests,
  cargo deny licence checks and parser fuzzing.
• cargo xtask dist builds the release tarball and Debian package.