Export findings as markdown (Ctrl+E), and the journal that makes it true

The output of an RE session is what you worked out, and it was locked in a
.i64 that only IDA can read. Ctrl+E (or `drive export`, or the `export` RPC
verb) writes it out: your comments grouped by function with the line each
annotates, the names and prototypes you set, the types you declared.

**The hard part was provenance, and it needed a mechanism, not a filter.**
A database does not record WHO wrote a comment or a name. IDA's analyzer
sets `; switch 73 cases` and `; s1` with the same `set_cmt` a person uses,
and the ELF loader sets `elf_gnu_hash_nbuckets` and `File class: 64-bit`
the same way. Four probes, all negative: the FF_COMM flag is identical,
`get_cmt` returns them all, `generate_disasm_line` tags every one of them
COLOR_REGCMT (not COLOR_AUTOCMT), and they survive with auto-comments
switched off. A first cut filtered by shape and produced a report whose
first screen was ELF header trivia and `; jumptable ... case 99`.

So idatui journals its own edits (idatui/journal.py) into a netnode in the
database: it rides along in the .i64, it is still there next session, and
the report is then exactly what was done here -- 2 findings out of a
database carrying 693 other annotations. Recorded at the choke points in
edit_ctl (rename, name-address, comment, retype) and in the struct editor;
flushed on save, on export and on quit, so no edit pays a round trip.

Without a journal (a database worked on in the IDA GUI, or predating this)
the report falls back to filtering by shape -- dummy names, imports, loader
segments, the analyzer's stereotyped switch/jumptable strings -- and says
so in the document rather than claiming authorship it cannot prove.

idatui/findings.py splits gather (needs IDA) from render (does not), so the
formatting, grouping, sorting, escaping and the empty cases are tested
offline: tests/test_findings.py, 32 checks, no worker, 0.1s. The pilot
scenario covers the round trip that matters -- edit through the UI, export,
find it in the file, and reload the journal from the .i64.

Full suite: 842 passed, 0 failed, 51.2s.

1 files changed, 6 insertions, 0 deletions

diff --git a/README.md b/README.md
index c52019b..1092219 100644
--- a/README.md
+++ b/README.md
@@ -100,6 +100,12 @@ a 400 MB binary scrolls like a text file.
 **Decompiler** — Hex-Rays pseudocode with syntax highlighting, per-line address
 anchors, and rename/retype/comment that write back.
 
+**Findings export** (`ctrl+e`) — the session as a markdown writeup: your
+comments grouped by function, the names and prototypes you set, the types you
+declared. A `.i64` does not record *who* wrote a comment — IDA's own analyzer
+uses the same call — so idatui journals its edits into the database as it makes
+them, and the report is built from that. Also `python -m idatui.drive export`.
+
 **Structs / types** (`ctrl+t`) — local types as plain C: the list on the left,
 an editable, syntax-highlighted definition on the right. `Ctrl+S` declares it
 back into the database and reformats to IDA's own layout, `Ctrl+N` starts a new