Notices become chips that float over the body, not rows taken from it

A notice is an overlay now, which is the one place it is NOT like the
tree-sitter context: it takes no row from the body and moves no text. Each one
is a chip as wide as its own message plus a blank cell either side, anchored
to the pane right edge on the body top rows. The rest of each of those rows is
ordinary body text that still reads and still answers a click -- Notices.left
records where each chip starts, and the hit test refuses only the cells it
covers rather than the whole row.

The width is counted in GRID columns rather than scaled into the tagline face
the chip is drawn in, because the canonical grid is what a terminal client
draws and a chip narrower than its own text there would clip it; the narrower
tagline face simply leaves a little more room inside the chip. The tag layer
takes the geometry the grid pass already chose, so the two cannot disagree and
the GUI skipping the cells a tag layer covers leaves no stub behind.

Pane.body_offset is gone with the reservation it existed for, and bodyTop
takes only a rect. The body layer keeps every row it had, the scrollbar runs
the full body again, and the GUI smooth-scroll extents go back to the pane.

Co-Authored-By: Claude Opus 5 (1M context) <[email protected]>

1 files changed, 28 insertions, 132 deletions

diff --git a/test/snapshots/jumps.golden b/test/snapshots/jumps.golden
index 9800ca4c..8d4dc36e 100644
--- a/test/snapshots/jumps.golden
+++ b/test/snapshots/jumps.golden
@@ -36,9 +36,7 @@
 |3:      1 line 1                                                                ls
 |4:      2 line 2                                                                big.txt
 == snap to-file grid=150x31 cursor=7,3
-|3:      1 line 1                                                                                                                                     Left
-|4:      2 line 2                                                                ls
-|5:      3 line 3                                                                big.txt
+|3:      1 line 1                                                                ls                                                                  Left
 == snap goto-100 grid=150x31 cursor=7,27
 |3:     76 line 76                                                               ls
 |4:     77 line 77                                                               big.txt
@@ -68,40 +66,10 @@
 |28:    101 line 101
 |29:    102 line 102
 |30:    103 line 103
-== snap back-in-file grid=150x31 cursor=7,4
-|3:                                                                        Back  ls
-|4:      1 line 1                                                                big.txt
-|5:      2 line 2
-|6:      3 line 3
-|7:      4 line 4
-|8:      5 line 5
-|9:      6 line 6
-|10:      7 line 7
-|11:      8 line 8
-|12:      9 line 9
-|13:     10 line 10
-|14:     11 line 11
-|15:     12 line 12
-|16:     13 line 13
-|17:     14 line 14
-|18:     15 line 15
-|19:     16 line 16
-|20:     17 line 17
-|21:     18 line 18
-|22:     19 line 19
-|23:     20 line 20
-|24:     21 line 21
-|25:     22 line 22
-|26:     23 line 23
-|27:     24 line 24
-|28:     25 line 25
-|29:     26 line 26
-|30:     27 line 27
-== snap back-to-shell grid=150x31 cursor=79,5
-== snap forward-file grid=150x31 cursor=7,3
-|3:      1 line 1                                                                                                                                  Forward
-|4:      2 line 2                                                                ls
-|5:      3 line 3                                                                big.txt
+== snap back-in-file grid=150x31 cursor=7,3
+|3:      1 line 1                                                         Back   ls
+|4:      2 line 2                                                                big.txt
+|5:      3 line 3
 |6:      4 line 4
 |7:      5 line 5
 |8:      6 line 6
@@ -127,41 +95,13 @@
 |28:     26 line 26
 |29:     27 line 27
 |30:     28 line 28
-== snap forward-100 grid=150x31 cursor=7,18
-|3:                                                                     Forward  ls
-|4:     86 line 86                                                               big.txt
-|5:     87 line 87
-|6:     88 line 88
-|7:     89 line 89
-|8:     90 line 90
-|9:     91 line 91
-|10:     92 line 92
-|11:     93 line 93
-|12:     94 line 94
-|13:     95 line 95
-|14:     96 line 96
-|15:     97 line 97
-|16:     98 line 98
-|17:     99 line 99
-|18:    100 line 100
-|19:    101 line 101
-|20:    102 line 102
-|21:    103 line 103
-|22:    104 line 104
-|23:    105 line 105
-|24:    106 line 106
-|25:    107 line 107
-|26:    108 line 108
-|27:    109 line 109
-|28:    110 line 110
-|29:    111 line 111
-|30:    112 line 112
-== snap last grid=150x31 cursor=79,5
-|3:                                                                        Last  ls
-== snap last-back grid=150x31 cursor=7,17
-|3:     86 line 86                                                                                                                                    Last
-|4:     87 line 87                                                               ls
-|5:     88 line 88                                                               big.txt
+== snap back-to-shell grid=150x31 cursor=79,5
+== snap forward-file grid=150x31 cursor=7,3
+|3:      1 line 1                                                                ls                                                               Forward
+== snap forward-100 grid=150x31 cursor=7,17
+|3:     86 line 86                                                     Forward   ls
+|4:     87 line 87                                                               big.txt
+|5:     88 line 88
 |6:     89 line 89
 |7:     90 line 90
 |8:     91 line 91
@@ -187,30 +127,12 @@
 |28:    111 line 111
 |29:    112 line 112
 |30:    113 line 113
-== snap jumplist grid=150x31 cursor=7,18
-|3:                                                                    Jumplist  ls
-|4:     86 line 86                                                               big.txt
-|5:     87 line 87
-|6:     88 line 88
-|7:     89 line 89
-|8:     90 line 90
-|9:     91 line 91
-|10:     92 line 92
-|11:     93 line 93
-|12:     94 line 94
-|13:     95 line 95
-|14:     96 line 96
-|15:     97 line 97
-|16:     98 line 98
-|17:     99 line 99
-|18:    100 line 100
-|19:    101 line 101
-|20:    102 line 102
-|21:    103 line 103
-|22:    104 line 104
-|23:    105 line 105
-|24:    106 line 106
-|25:    107 line 107
+== snap last grid=150x31 cursor=79,5
+|3:     86 line 86                                                        Last   ls
+== snap last-back grid=150x31 cursor=7,17
+|3:     86 line 86                                                               ls                                                                  Last
+== snap jumplist grid=150x31 cursor=7,17
+|3:     86 line 86                                                    Jumplist   ls
 |26:    /tmp/pardes-snap/jumps/cwd/+Jumps Save Tty Collapse Del LocationsConfig
 |27:      1 @p1:3:3 /tmp/pardes-snap/jumps/cwd
 |28:      2 /tmp/pardes-snap/jumps/cwd/big.txt:1:1 line 1
@@ -218,32 +140,7 @@
 |30:      4 /tmp/pardes-snap/jumps/cwd/big.txt:100:1 line 100
 == snap step1-shell grid=150x31 cursor=79,5
 |3:     86 line 86                                                               ls
-|4:     87 line 87                                                               big.txt
-|5:     88 line 88
-|6:     89 line 89
-|7:     90 line 90
-|8:     91 line 91
-|9:     92 line 92
-|10:     93 line 93
-|11:     94 line 94
-|12:     95 line 95
-|13:     96 line 96
-|14:     97 line 97
-|15:     98 line 98
-|16:     99 line 99
-|17:    100 line 100
-|18:    101 line 101
-|19:    102 line 102
-|20:    103 line 103
-|21:    104 line 104
-|22:    105 line 105
-|23:    106 line 106
-|24:    107 line 107
-|25:    108 line 108
-|27:                                                                        Look
-|28:      1 @p1:3:3 /tmp/pardes-snap/jumps/cwd
-|29:      2 /tmp/pardes-snap/jumps/cwd/big.txt:1:1 line 1
-|30:      3 @p1:3:3 /tmp/pardes-snap/jumps/cwd
+|27:      1 @p1:3:3 /tmp/pardes-snap/jumps/cwd                             Look
 == style step1-shell grid=150x31
 |0: 0-70 #b2c3b8,#1d2824, 71-149 d,#1d2824,
 |1: 0-1 #ffffff,#887455, 2-2 d,#1d2824, 3-34 #b2c3b8,#1d2824, 35-74 d,#1d2824, 75-76 #ffffff,#887455, 77-77 d,#26362d, 78-109 #becfc4,#26362d, 110-149 d,#26362d,
@@ -272,10 +169,10 @@
 |24: 0-0 d,#152019, 1-1 d,#0d1410, 2-6 #59675c,#0d1410, 7-14 #e5eee5,#0d1410, 15-74 d,#0d1410, 75-75 d,#608269, 76-76 d,#0d1410, 77-149 #e5eee5,#0d1410,
 |25: 0-0 d,#152019, 1-1 d,#0d1410, 2-6 #59675c,#0d1410, 7-14 #e5eee5,#0d1410, 15-74 d,#0d1410, 75-75 d,#608269, 76-76 d,#0d1410, 77-149 #e5eee5,#0d1410,
 |26: 0-1 #ffffff,#496656, 2-2 d,#1d2824, 3-29 #b2c3b8,#1d2824, 30-35 #d3b0d9,#1d2824, 36-73 #b2c3b8,#1d2824, 74-74 d,#1d2824, 75-75 d,#608269, 76-76 d,#0d1410, 77-149 #e5eee5,#0d1410,
-|27: 0-0 d,#152019, 1-1 d,#0d1410, 2-70 d,#1d2824, 71-74 #b2c3b8,#1d2824, 75-75 d,#608269, 76-76 d,#0d1410, 77-149 #e5eee5,#0d1410,
-|28: 0-0 d,#608269, 1-1 d,#0d1410, 2-13 #59675c,#0d1410, 14-40 #e5eee5,#0d1410, 41-74 d,#0d1410, 75-75 d,#608269, 76-76 d,#0d1410, 77-149 #e5eee5,#0d1410,
-|29: 0-0 d,#608269, 1-1 d,#0d1410, 2-44 #59675c,#0d1410, 45-51 #e5eee5,#0d1410, 52-74 d,#0d1410, 75-75 d,#608269, 76-76 d,#0d1410, 77-149 #e5eee5,#0d1410,
-|30: 0-0 d,#152019, 1-1 d,#0d1410, 2-13 #59675c,#0d1410, 14-40 #e5eee5,#0d1410, 41-74 d,#0d1410, 75-75 d,#608269, 76-76 d,#0d1410, 77-149 #e5eee5,#0d1410,
+|27: 0-0 d,#608269, 1-1 d,#0d1410, 2-13 #59675c,#0d1410, 14-40 #e5eee5,#0d1410, 41-68 d,#0d1410, 69-69 d,#1d2824, 70-73 #b2c3b8,#1d2824, 74-74 d,#1d2824, 75-75 d,#608269, 76-76 d,#0d1410, 77-149 #e5eee5,#0d1410,
+|28: 0-0 d,#608269, 1-1 d,#0d1410, 2-44 #59675c,#0d1410, 45-51 #e5eee5,#0d1410, 52-74 d,#0d1410, 75-75 d,#608269, 76-76 d,#0d1410, 77-149 #e5eee5,#0d1410,
+|29: 0-0 d,#608269, 1-1 d,#0d1410, 2-13 #59675c,#0d1410, 14-40 #e5eee5,#0d1410, 41-74 d,#0d1410, 75-75 d,#608269, 76-76 d,#0d1410, 77-149 #e5eee5,#0d1410,
+|30: 0-0 d,#152019, 1-1 d,#0d1410, 2-46 #59675c,#0d1410, 47-55 #e5eee5,#0d1410, 56-74 d,#0d1410, 75-75 d,#608269, 76-76 d,#0d1410, 77-149 #e5eee5,#0d1410,
 == snap step2-file grid=150x31 cursor=7,3
 |3:      1 line 1                                                                ls
 |4:      2 line 2                                                                big.txt
@@ -324,10 +221,9 @@
 |23:    109 line 109
 |24:    110 line 110
 |25:    111 line 111
-|28:      2 /tmp/pardes-snap/jumps/cwd/big.txt:1:1 line 1
-|29:      3 @p1:3:3 /tmp/pardes-snap/jumps/cwd
-|30:      4 /tmp/pardes-snap/jumps/cwd/big.txt:100:1 line 100
+|27:      2 /tmp/pardes-snap/jumps/cwd/big.txt:1:1 line 1                  Look
+|28:      3 @p1:3:3 /tmp/pardes-snap/jumps/cwd
+|29:      4 /tmp/pardes-snap/jumps/cwd/big.txt:100:1 line 100
+|30:      5
 == snap step-back grid=150x31 cursor=79,5
-== snap look-row grid=150x31 cursor=79,5
-|5:     91 line 91                                                               ls
-|6:     92 line 92                                                               big.txt
+== snap look-row grid=150x31 cursor=7,14