A middle or right sweep over a column's or the workspace's tag runs or looks for what it swept, as a pane tag's does

Both headers acted on the press: a middle or right press ran, or looked
for, the word under it (or the header's selection when it was on that) at
once, so a drag had nothing left to do. A sweep of `echo SWEPT` in a column
tag ran a bare `echo`. They have done so since the headers were drawn apart
from the panes; it is no regression, and the -l/Restore allocator fix
(ompukopz) does not touch it.

Now a press on a header holds a HeaderSweep (the column by its serial, or
the workspace), which the drag extends, held to the header's row and text
as a pane tag's sweep is. It is painted in its button's tint meanwhile, and
the release runs what it swept in that header's context; a release that has
not moved runs the word or selection a click always did. The other of
middle and right cancels it (acme 2-3/3-2); the select button is inert, as
a header's command already takes the held selection as its argument.

Running on the release, a builtin from a header is announced as one from a
pane tag is: the press used to set the announcement and the release clear it
at once. find, restore, theme, topbarexec, ttyhelp, tutor and windowops
re-recorded for that badge alone.

headersweep.snap sweeps the column and workspace tags with the middle
button and a word part with the right one, and cancels a sweep;
headersweep-restored.snap sweeps both after Dump and Restore.

Co-Authored-By: Claude Opus 5.5 <[email protected]>

1 files changed, 60 insertions, 0 deletions

diff --git a/test/snapshots/headersweep.golden b/test/snapshots/headersweep.golden
new file mode 100644
index 00000000..92d23a1b
--- /dev/null
+++ b/test/snapshots/headersweep.golden
@@ -0,0 +1,60 @@
+== style col-sweeping grid=120x21
+|0: 0-119 #b2c3b8,#1d2824,
+|1: 0-1 d,#887455, 2-2 d,#314738, 3-35 #becfc4,#314738, 36-43 #f5f7ee,#5b7e5a, 44-59 #becfc4,#314738, 60-61 #becfc4,#887455, 62-62 #becfc4,#1d2824, 63-119 #b2c3b8,#1d2824,
+|2: 0-1 d,#add38a, 2-2 d,#314738, 3-35 #becfc4,#314738, 36-44 #dfbce5,#314738, 45-59 #becfc4,#314738, 60-61 #becfc4,#496656, 62-62 #becfc4,#1d2824, 63-95 #b2c3b8,#1d2824, 96-104 #d3b0d9,#1d2824, 105-119 #b2c3b8,#1d2824,
+|3: 0-2 d,#314738, 3-59 #becfc4,#314738, 60-62 #becfc4,#1d2824, 63-119 #b2c3b8,#1d2824,
+|4: 0-0 d,#608269, 1-1 d,#0d1410, 2-59 #e5eee5,#0d1410, 60-60 #e5eee5,#608269, 61-119 #e5eee5,#0d1410,
+|5: 0-0 d,#608269, 1-1 d,#0d1410, 2-59 #e5eee5,#0d1410, 60-60 #e5eee5,#608269, 61-119 #e5eee5,#0d1410,
+|6: 0-0 d,#608269, 1-59 d,#0d1410, 60-60 d,#608269, 61-119 d,#0d1410,
+|7: 0-0 d,#608269, 1-59 d,#0d1410, 60-60 d,#608269, 61-119 d,#0d1410,
+|8: 0-0 d,#608269, 1-59 d,#0d1410, 60-60 d,#608269, 61-119 d,#0d1410,
+|9: 0-0 d,#608269, 1-59 d,#0d1410, 60-60 d,#608269, 61-119 d,#0d1410,
+|10: 0-0 d,#608269, 1-59 d,#0d1410, 60-60 d,#608269, 61-119 d,#0d1410,
+|11: 0-0 d,#608269, 1-59 d,#0d1410, 60-60 d,#608269, 61-119 d,#0d1410,
+|12: 0-1 d,#496656, 2-2 d,#1d2824, 3-35 #b2c3b8,#1d2824, 36-44 #d3b0d9,#1d2824, 45-59 #b2c3b8,#1d2824, 60-60 #b2c3b8,#608269, 61-119 #b2c3b8,#0d1410,
+|13: 0-2 d,#1d2824, 3-59 #b2c3b8,#1d2824, 60-60 #b2c3b8,#608269, 61-119 #b2c3b8,#0d1410,
+|14: 0-0 d,#608269, 1-1 d,#0d1410, 2-59 #e5eee5,#0d1410, 60-60 #e5eee5,#608269, 61-119 #e5eee5,#0d1410,
+|15: 0-0 d,#608269, 1-1 d,#0d1410, 2-59 #e5eee5,#0d1410, 60-60 #e5eee5,#608269, 61-119 #e5eee5,#0d1410,
+|16: 0-0 d,#608269, 1-59 d,#0d1410, 60-60 d,#608269, 61-119 d,#0d1410,
+|17: 0-0 d,#608269, 1-59 d,#0d1410, 60-60 d,#608269, 61-119 d,#0d1410,
+|18: 0-0 d,#608269, 1-59 d,#0d1410, 60-60 d,#608269, 61-119 d,#0d1410,
+|19: 0-0 d,#608269, 1-59 d,#0d1410, 60-60 d,#608269, 61-119 d,#0d1410,
+|20: 0-0 d,#608269, 1-59 d,#0d1410, 60-60 d,#608269, 61-119 d,#0d1410,
+== snap col-swept grid=120x21 cursor=4,8
+|Newcol Joincol Find Grep Help Changelog Tutor Dump NextColor Debug Exit
+|   New Tty Find Grep Joincol Delcol echo SW''EPT-COL           New Tty Find Grep Joincol Delcol
+|   /tmp/pardes-snap/headersweep/cwd Tty+bash Save Mode Filte   /tmp/pardes-snap/headersweep/cwd Tty+bash Save Mode Filte
+|   r Collapse Del                                              r Collapse Del
+|  ls                                                          ls
+|  hay.txt                                                     hay.txt
+|  echo SW''EPT-COL
+|  SWEPT-COL
+|
+|
+|
+|
+|   /tmp/pardes-snap/headersweep/cwd Tty+bash Save Mode Filte
+|   r Collapse Del
+|  ls
+|  hay.txt
+== snap ws-swept grid=120x21 cursor=4,10
+|0: Newcol Joincol Find Grep Help Changelog Tutor Dump NextColor Debug Exit echo SW''EPT-WS
+|8:   echo SW''EPT-WS
+|9:   SWEPT-WS
+== snap ws-looked grid=120x21 cursor=7,19
+|0: Newcol Joincol Find Grep Help Changelog Tutor Dump NextColor Debug Exit echo SW''EPT-WS xxhay.txtxx
+|17:    /tmp/pardes-snap/headersweep/cwd/hay.txt Save Tty Collaps
+|18:    e Del
+|19:      1 ZQNEEDLE
+== snap cancelled grid=120x21 cursor=7,19
+== style selected grid=120x21
+|1: 0-1 d,#887455, 2-2 d,#1d2824, 3-59 #b2c3b8,#1d2824, 60-61 #b2c3b8,#887455, 62-62 #b2c3b8,#314738, 63-70 #becfc4,#314738, 71-79 #f5f7ee,#3c614a, 80-80 #f5f7ee,#314738, 81-119 #becfc4,#314738,
+|2: 0-1 d,#496656, 2-2 d,#1d2824, 3-35 #b2c3b8,#1d2824, 36-44 #d3b0d9,#1d2824, 45-59 #b2c3b8,#1d2824, 60-61 #b2c3b8,#add38a, 62-62 #b2c3b8,#314738, 63-95 #becfc4,#314738, 96-104 #dfbce5,#314738, 105-119 #becfc4,#314738,
+|3: 0-2 d,#1d2824, 3-59 #b2c3b8,#1d2824, 60-62 #b2c3b8,#314738, 63-119 #becfc4,#314738,
+|6: 0-0 d,#608269, 1-1 d,#0d1410, 2-59 #e5eee5,#0d1410, 60-60 #e5eee5,#608269, 61-119 #e5eee5,#0d1410,
+|7: 0-0 d,#608269, 1-1 d,#0d1410, 2-59 #e5eee5,#0d1410, 60-60 #e5eee5,#608269, 61-119 #e5eee5,#0d1410,
+|8: 0-0 d,#608269, 1-1 d,#0d1410, 2-59 #e5eee5,#0d1410, 60-60 #e5eee5,#608269, 61-119 #e5eee5,#0d1410,
+|9: 0-0 d,#608269, 1-1 d,#0d1410, 2-59 #e5eee5,#0d1410, 60-60 #e5eee5,#608269, 61-119 #e5eee5,#0d1410,
+|17: 0-1 d,#496656, 2-2 d,#1d2824, 3-35 #b2c3b8,#1d2824, 36-43 #d3b0d9,#1d2824, 44-59 #b2c3b8,#1d2824, 60-60 #b2c3b8,#608269, 61-119 #b2c3b8,#0d1410,
+|18: 0-2 d,#1d2824, 3-59 #b2c3b8,#1d2824, 60-60 #b2c3b8,#608269, 61-119 #b2c3b8,#0d1410,
+|19: 0-0 d,#608269, 1-4 d,#0d1410, 5-6 #59675c,#0d1410, 7-59 #e5eee5,#0d1410, 60-60 #e5eee5,#608269, 61-119 #e5eee5,#0d1410,