Refactor panes and filesystem; replace FUSE with 9P

Consolidate pane, layout, memory and host code. Serve 9P by default over Unix sockets, with runtime mounts and optional TCP/QUIC transports. Remove FUSE and obsolete proof-of-concept examples.

Fix highlighting and terminal-history performance, expand differential and stress-test infrastructure, sort navigation results while preserving the next occurrence, add syntax-colored Braille minimaps, remove SPC-k, and document 9P interaction as a repository skill.

1 files changed, 183 insertions, 0 deletions

diff --git a/test/snapshots/mini.golden b/test/snapshots/mini.golden
new file mode 100644
index 00000000..16e170f6
--- /dev/null
+++ b/test/snapshots/mini.golden
@@ -0,0 +1,183 @@
+== snap opened grid=90x22 cursor=7,13
+|New Newcol Joincol Find Grep Help Changelog Tutor Dump NextColor Debug Kill
+|  /tmp/pardes-snap/mini/cwd/commands.txt           Save New Newtty Del
+|     1 @`Mini demo.zig`
+|
+|
+|
+|
+|
+|
+|
+|
+|
+|  /tmp/pardes-snap/mini/cwd/Mini demo.zig          Save New Newtty Del
+|     1 ⠭⠍⣥⢩⣭⡭⣭⣬⣌⢭⣭⠌⠬⠅⠍⠁
+|     2 ⣂⢀⣉⣉⢉⣈⢁⣀⣀⢀⣀⣀⣀⢀⣀⣀⣀⣀⣀
+|     3 ⠉⠉⠁⠉⠉⠉⠈⠈⠉⠉⠉⠉⠉⠉
+|     4
+== style opened grid=90x22
+|0: 0-74 #949494,#121212, 75-89 d,#121212,
+|1: 0-1 #ffffff,#262626, 2-69 #949494,#121212, 70-89 d,#121212,
+|2: 0-0 d,#444444, 1-1 d,#080808, 2-6 #626262,#080808, 7-22 #bdbdbd,#080808, 23-89 d,#080808,
+|3: 0-0 d,#444444, 1-1 d,#080808, 2-6 #626262,#080808, 7-89 d,#080808,
+|4: 0-0 d,#444444, 1-1 d,#080808, 2-6 #626262,#080808, 7-89 d,#080808,
+|5: 0-0 d,#444444, 1-1 d,#080808, 2-6 #626262,#080808, 7-89 d,#080808,
+|6: 0-0 d,#444444, 1-1 d,#080808, 2-6 #626262,#080808, 7-89 d,#080808,
+|7: 0-0 d,#444444, 1-1 d,#080808, 2-6 #626262,#080808, 7-89 d,#080808,
+|8: 0-0 d,#444444, 1-1 d,#080808, 2-6 #626262,#080808, 7-89 d,#080808,
+|9: 0-0 d,#444444, 1-1 d,#080808, 2-6 #626262,#080808, 7-89 d,#080808,
+|10: 0-0 d,#444444, 1-1 d,#080808, 2-6 #626262,#080808, 7-89 d,#080808,
+|11: 0-0 d,#444444, 1-1 d,#080808, 2-6 #626262,#080808, 7-89 d,#080808,
+|12: 0-1 #ffffff,#626262, 2-69 #949494,#121212, 70-89 d,#121212,
+|13: 0-0 d,#444444, 1-1 d,#080808, 2-6 #949494,#121212, 7-8 #bdbdbd,#080808, 9-9 #cf87e8,#080808,b 10-12 #bdbdbd,#080808, 13-15 #cf87e8,#080808,b 16-21 #e3c78a,#080808, 22-22 #bdbdbd,#080808, 23-89 d,#080808,
+|14: 0-0 d,#444444, 1-1 d,#080808, 2-6 #626262,#080808, 7-8 #ffffff,#080808,b 9-11 #cf87e8,#080808,b 12-25 #ffffff,#080808,b 26-89 d,#080808,
+|15: 0-0 d,#444444, 1-1 d,#080808, 2-6 #626262,#080808, 7-17 #bdbdbd,#080808, 18-19 #e3c78a,#080808, 20-20 #bdbdbd,#080808, 21-89 d,#080808,
+|16: 0-0 d,#444444, 1-1 d,#080808, 2-6 #626262,#080808, 7-89 d,#080808,
+|17: 0-0 d,#444444, 1-1 d,#080808, 2-6 #626262,#080808, 7-89 d,#080808,
+|18: 0-0 d,#444444, 1-1 d,#080808, 2-6 #626262,#080808, 7-89 d,#080808,
+|19: 0-0 d,#444444, 1-1 d,#080808, 2-6 #626262,#080808, 7-89 d,#080808,
+|20: 0-0 d,#444444, 1-1 d,#080808, 2-6 #626262,#080808, 7-89 d,#080808,
+|21: 0-0 d,#444444, 1-1 d,#080808, 2-6 #626262,#080808, 7-89 d,#080808,
+== 9p opened grid=90x22 cursor=7,13,block
+|0: New Newcol Joincol Find Grep Help Changelog Tutor Dump NextColor Debug Kill
+@0: 0-74 #949494,#121212,,tagline 75-89 d,#121212,,tagline
+|1:   /tmp/pardes-snap/mini/cwd/commands.txt           Save New Newtty Del
+@1: 0-1 #ffffff,#262626,,tagline 2-69 #949494,#121212,,tagline 70-89 d,#121212,,tagline
+|2:      1 @`Mini demo.zig`
+@2: 0-0 d,#444444,,body 1-1 d,#080808,,body 2-6 #626262,#080808,,body 7-22 #bdbdbd,#080808,,body 23-89 d,#080808,,body
+|3:
+@3: 0-0 d,#444444,,body 1-1 d,#080808,,body 2-6 #626262,#080808,,body 7-89 d,#080808,,body
+|4:
+@4: 0-0 d,#444444,,body 1-1 d,#080808,,body 2-6 #626262,#080808,,body 7-89 d,#080808,,body
+|5:
+@5: 0-0 d,#444444,,body 1-1 d,#080808,,body 2-6 #626262,#080808,,body 7-89 d,#080808,,body
+|6:
+@6: 0-0 d,#444444,,body 1-1 d,#080808,,body 2-6 #626262,#080808,,body 7-89 d,#080808,,body
+|7:
+@7: 0-0 d,#444444,,body 1-1 d,#080808,,body 2-6 #626262,#080808,,body 7-89 d,#080808,,body
+|8:
+@8: 0-0 d,#444444,,body 1-1 d,#080808,,body 2-6 #626262,#080808,,body 7-89 d,#080808,,body
+|9:
+@9: 0-0 d,#444444,,body 1-1 d,#080808,,body 2-6 #626262,#080808,,body 7-89 d,#080808,,body
+|10:
+@10: 0-0 d,#444444,,body 1-1 d,#080808,,body 2-6 #626262,#080808,,body 7-89 d,#080808,,body
+|11:
+@11: 0-0 d,#444444,,body 1-1 d,#080808,,body 2-6 #626262,#080808,,body 7-89 d,#080808,,body
+|12:   /tmp/pardes-snap/mini/cwd/Mini demo.zig          Save New Newtty Del
+@12: 0-1 #ffffff,#626262,,tagline 2-69 #949494,#121212,,tagline 70-89 d,#121212,,tagline
+|13:      1 ⠭⠍⣥⢩⣭⡭⣭⣬⣌⢭⣭⠌⠬⠅⠍⠁
++13: 7="⠭" 8="⠍" 9="⣥" 10="⢩" 11="⣭" 12="⡭" 13="⣭" 14="⣬" 15="⣌" 16="⢭" 17="⣭" 18="⠌" 19="⠬" 20="⠅" 21="⠍" 22="⠁"
+@13: 0-0 d,#444444,,body 1-1 d,#080808,,body 2-6 #949494,#121212,,body 7-8 #bdbdbd,#080808,,body 9-9 #cf87e8,#080808,b,body 10-12 #bdbdbd,#080808,,body 13-15 #cf87e8,#080808,b,body 16-21 #e3c78a,#080808,,body 22-22 #bdbdbd,#080808,,body 23-89 d,#080808,,body
+|14:      2 ⣂⢀⣉⣉⢉⣈⢁⣀⣀⢀⣀⣀⣀⢀⣀⣀⣀⣀⣀
++14: 7="⣂" 8="⢀" 9="⣉" 10="⣉" 11="⢉" 12="⣈" 13="⢁" 14="⣀" 15="⣀" 16="⢀" 17="⣀" 18="⣀" 19="⣀" 20="⢀" 21="⣀" 22="⣀" 23="⣀" 24="⣀" 25="⣀"
+@14: 0-0 d,#444444,,body 1-1 d,#080808,,body 2-6 #626262,#080808,,body 7-8 #ffffff,#080808,b,body 9-11 #cf87e8,#080808,b,body 12-25 #ffffff,#080808,b,body 26-89 d,#080808,,body
+|15:      3 ⠉⠉⠁⠉⠉⠉⠈⠈⠉⠉⠉⠉⠉⠉
++15: 7="⠉" 8="⠉" 9="⠁" 10="⠉" 11="⠉" 12="⠉" 13="⠈" 14="⠈" 15="⠉" 16="⠉" 17="⠉" 18="⠉" 19="⠉" 20="⠉"
+@15: 0-0 d,#444444,,body 1-1 d,#080808,,body 2-6 #626262,#080808,,body 7-17 #bdbdbd,#080808,,body 18-19 #e3c78a,#080808,,body 20-20 #bdbdbd,#080808,,body 21-89 d,#080808,,body
+|16:      4
+@16: 0-0 d,#444444,,body 1-1 d,#080808,,body 2-6 #626262,#080808,,body 7-89 d,#080808,,body
+|17:
+@17: 0-0 d,#444444,,body 1-1 d,#080808,,body 2-6 #626262,#080808,,body 7-89 d,#080808,,body
+|18:
+@18: 0-0 d,#444444,,body 1-1 d,#080808,,body 2-6 #626262,#080808,,body 7-89 d,#080808,,body
+|19:
+@19: 0-0 d,#444444,,body 1-1 d,#080808,,body 2-6 #626262,#080808,,body 7-89 d,#080808,,body
+|20:
+@20: 0-0 d,#444444,,body 1-1 d,#080808,,body 2-6 #626262,#080808,,body 7-89 d,#080808,,body
+|21:
+@21: 0-0 d,#444444,,body 1-1 d,#080808,,body 2-6 #626262,#080808,,body 7-89 d,#080808,,body
+== style colors-off grid=90x22
+|13: 0-0 d,#444444, 1-1 d,#080808, 2-6 #949494,#121212, 7-22 #bdbdbd,#080808, 23-89 d,#080808,
+|14: 0-0 d,#444444, 1-1 d,#080808, 2-6 #626262,#080808, 7-25 #bdbdbd,#080808, 26-89 d,#080808,
+|15: 0-0 d,#444444, 1-1 d,#080808, 2-6 #626262,#080808, 7-20 #bdbdbd,#080808, 21-89 d,#080808,
+== 9p colors-off grid=90x22 cursor=7,13,block
+|13:      1 ⠭⠍⣥⢩⣭⡭⣭⣬⣌⢭⣭⠌⠬⠅⠍⠁
++13: 7="⠭" 8="⠍" 9="⣥" 10="⢩" 11="⣭" 12="⡭" 13="⣭" 14="⣬" 15="⣌" 16="⢭" 17="⣭" 18="⠌" 19="⠬" 20="⠅" 21="⠍" 22="⠁"
+@13: 0-0 d,#444444,,body 1-1 d,#080808,,body 2-6 #949494,#121212,,body 7-22 #bdbdbd,#080808,,body 23-89 d,#080808,,body
+|14:      2 ⣂⢀⣉⣉⢉⣈⢁⣀⣀⢀⣀⣀⣀⢀⣀⣀⣀⣀⣀
++14: 7="⣂" 8="⢀" 9="⣉" 10="⣉" 11="⢉" 12="⣈" 13="⢁" 14="⣀" 15="⣀" 16="⢀" 17="⣀" 18="⣀" 19="⣀" 20="⢀" 21="⣀" 22="⣀" 23="⣀" 24="⣀" 25="⣀"
+@14: 0-0 d,#444444,,body 1-1 d,#080808,,body 2-6 #626262,#080808,,body 7-25 #bdbdbd,#080808,,body 26-89 d,#080808,,body
+|15:      3 ⠉⠉⠁⠉⠉⠉⠈⠈⠉⠉⠉⠉⠉⠉
++15: 7="⠉" 8="⠉" 9="⠁" 10="⠉" 11="⠉" 12="⠉" 13="⠈" 14="⠈" 15="⠉" 16="⠉" 17="⠉" 18="⠉" 19="⠉" 20="⠉"
+@15: 0-0 d,#444444,,body 1-1 d,#080808,,body 2-6 #626262,#080808,,body 7-20 #bdbdbd,#080808,,body 21-89 d,#080808,,body
+== style colors-on grid=90x22
+|13: 0-0 d,#444444, 1-1 d,#080808, 2-6 #949494,#121212, 7-8 #bdbdbd,#080808, 9-9 #cf87e8,#080808,b 10-12 #bdbdbd,#080808, 13-15 #cf87e8,#080808,b 16-21 #e3c78a,#080808, 22-22 #bdbdbd,#080808, 23-89 d,#080808,
+|14: 0-0 d,#444444, 1-1 d,#080808, 2-6 #626262,#080808, 7-8 #ffffff,#080808,b 9-11 #cf87e8,#080808,b 12-25 #ffffff,#080808,b 26-89 d,#080808,
+|15: 0-0 d,#444444, 1-1 d,#080808, 2-6 #626262,#080808, 7-17 #bdbdbd,#080808, 18-19 #e3c78a,#080808, 20-20 #bdbdbd,#080808, 21-89 d,#080808,
+== snap resized grid=105x26 cursor=7,15
+|New Newcol Joincol Find Grep Help Changelog Tutor Dump NextColor Debug Kill
+|  /tmp/pardes-snap/mini/cwd/commands.txt                          Save New Newtty Del
+|     1 @`Mini demo.zig`
+|
+|
+|
+|
+|
+|
+|
+|
+|
+|
+|
+|  /tmp/pardes-snap/mini/cwd/Mini demo.zig                         Save New Newtty Del
+|     1 ⠭⠍⣥⢩⣭⡭⣭⣬⣌⢭⣭⠌⠬⠅⠍⠁
+|     2 ⣂⢀⣉⣉⢉⣈⢁⣀⣀⢀⣀⣀⣀⢀⣀⣀⣀⣀⣀
+|     3 ⠉⠉⠁⠉⠉⠉⠈⠈⠉⠉⠉⠉⠉⠉
+|     4
+== 9p resized grid=105x26 cursor=7,15,block
+|0: New Newcol Joincol Find Grep Help Changelog Tutor Dump NextColor Debug Kill
+@0: 0-74 #949494,#121212,,tagline 75-104 d,#121212,,tagline
+|1:   /tmp/pardes-snap/mini/cwd/commands.txt                          Save New Newtty Del
+@1: 0-1 #ffffff,#262626,,tagline 2-84 #949494,#121212,,tagline 85-104 d,#121212,,tagline
+|2:      1 @`Mini demo.zig`
+@2: 0-0 d,#444444,,body 1-1 d,#080808,,body 2-6 #626262,#080808,,body 7-22 #bdbdbd,#080808,,body 23-104 d,#080808,,body
+|3:
+@3: 0-0 d,#444444,,body 1-1 d,#080808,,body 2-6 #626262,#080808,,body 7-104 d,#080808,,body
+|4:
+@4: 0-0 d,#444444,,body 1-1 d,#080808,,body 2-6 #626262,#080808,,body 7-104 d,#080808,,body
+|5:
+@5: 0-0 d,#444444,,body 1-1 d,#080808,,body 2-6 #626262,#080808,,body 7-104 d,#080808,,body
+|6:
+@6: 0-0 d,#444444,,body 1-1 d,#080808,,body 2-6 #626262,#080808,,body 7-104 d,#080808,,body
+|7:
+@7: 0-0 d,#444444,,body 1-1 d,#080808,,body 2-6 #626262,#080808,,body 7-104 d,#080808,,body
+|8:
+@8: 0-0 d,#444444,,body 1-1 d,#080808,,body 2-6 #626262,#080808,,body 7-104 d,#080808,,body
+|9:
+@9: 0-0 d,#444444,,body 1-1 d,#080808,,body 2-6 #626262,#080808,,body 7-104 d,#080808,,body
+|10:
+@10: 0-0 d,#444444,,body 1-1 d,#080808,,body 2-6 #626262,#080808,,body 7-104 d,#080808,,body
+|11:
+@11: 0-0 d,#444444,,body 1-1 d,#080808,,body 2-6 #626262,#080808,,body 7-104 d,#080808,,body
+|12:
+@12: 0-0 d,#444444,,body 1-1 d,#080808,,body 2-6 #626262,#080808,,body 7-104 d,#080808,,body
+|13:
+@13: 0-0 d,#444444,,body 1-1 d,#080808,,body 2-6 #626262,#080808,,body 7-104 d,#080808,,body
+|14:   /tmp/pardes-snap/mini/cwd/Mini demo.zig                         Save New Newtty Del
+@14: 0-1 #ffffff,#626262,,tagline 2-84 #949494,#121212,,tagline 85-104 d,#121212,,tagline
+|15:      1 ⠭⠍⣥⢩⣭⡭⣭⣬⣌⢭⣭⠌⠬⠅⠍⠁
++15: 7="⠭" 8="⠍" 9="⣥" 10="⢩" 11="⣭" 12="⡭" 13="⣭" 14="⣬" 15="⣌" 16="⢭" 17="⣭" 18="⠌" 19="⠬" 20="⠅" 21="⠍" 22="⠁"
+@15: 0-0 d,#444444,,body 1-1 d,#080808,,body 2-6 #949494,#121212,,body 7-8 #bdbdbd,#080808,,body 9-9 #cf87e8,#080808,b,body 10-12 #bdbdbd,#080808,,body 13-15 #cf87e8,#080808,b,body 16-21 #e3c78a,#080808,,body 22-22 #bdbdbd,#080808,,body 23-104 d,#080808,,body
+|16:      2 ⣂⢀⣉⣉⢉⣈⢁⣀⣀⢀⣀⣀⣀⢀⣀⣀⣀⣀⣀
++16: 7="⣂" 8="⢀" 9="⣉" 10="⣉" 11="⢉" 12="⣈" 13="⢁" 14="⣀" 15="⣀" 16="⢀" 17="⣀" 18="⣀" 19="⣀" 20="⢀" 21="⣀" 22="⣀" 23="⣀" 24="⣀" 25="⣀"
+@16: 0-0 d,#444444,,body 1-1 d,#080808,,body 2-6 #626262,#080808,,body 7-8 #ffffff,#080808,b,body 9-11 #cf87e8,#080808,b,body 12-25 #ffffff,#080808,b,body 26-104 d,#080808,,body
+|17:      3 ⠉⠉⠁⠉⠉⠉⠈⠈⠉⠉⠉⠉⠉⠉
++17: 7="⠉" 8="⠉" 9="⠁" 10="⠉" 11="⠉" 12="⠉" 13="⠈" 14="⠈" 15="⠉" 16="⠉" 17="⠉" 18="⠉" 19="⠉" 20="⠉"
+@17: 0-0 d,#444444,,body 1-1 d,#080808,,body 2-6 #626262,#080808,,body 7-17 #bdbdbd,#080808,,body 18-19 #e3c78a,#080808,,body 20-20 #bdbdbd,#080808,,body 21-104 d,#080808,,body
+|18:      4
+@18: 0-0 d,#444444,,body 1-1 d,#080808,,body 2-6 #626262,#080808,,body 7-104 d,#080808,,body
+|19:
+@19: 0-0 d,#444444,,body 1-1 d,#080808,,body 2-6 #626262,#080808,,body 7-104 d,#080808,,body
+|20:
+@20: 0-0 d,#444444,,body 1-1 d,#080808,,body 2-6 #626262,#080808,,body 7-104 d,#080808,,body
+|21:
+@21: 0-0 d,#444444,,body 1-1 d,#080808,,body 2-6 #626262,#080808,,body 7-104 d,#080808,,body
+|22:
+@22: 0-0 d,#444444,,body 1-1 d,#080808,,body 2-6 #626262,#080808,,body 7-104 d,#080808,,body
+|23:
+@23: 0-0 d,#444444,,body 1-1 d,#080808,,body 2-6 #626262,#080808,,body 7-104 d,#080808,,body
+|24:
+@24: 0-0 d,#444444,,body 1-1 d,#080808,,body 2-6 #626262,#080808,,body 7-104 d,#080808,,body
+|25:
+@25: 0-0 d,#444444,,body 1-1 d,#080808,,body 2-6 #626262,#080808,,body 7-104 d,#080808,,body