History deletion: delete one entry (x) or clear everything (X)

Store had full CRUD for match-and-replace rules but no way to delete or
prune history at all - it only ever grew, with no way to remove an
accidental capture or start a new engagement clean short of manually
deleting the DB file outside the tool entirely.

internal/store: DeleteEntry(id) removes one history row and its
history_fts search index row in a transaction. ClearHistory() empties
both tables entirely; rules are untouched. internal/ipc: new
"delete_entry" and "clear_history" request types, Client.DeleteEntry/
ClearHistory methods.

TUI: 'x' deletes the selected history entry, 'X' clears the whole
database. Both gated behind a y/n confirmation - a small reusable
confirmPrompt/confirmYes model state, checked first in the history
list's key handling, so any key other than y/Y safely cancels rather
than falling through to whatever that key normally does elsewhere (this
also means ctrl+c during a pending confirmation cancels the prompt
rather than quitting - a deliberate fail-safe, not an oversight: quick
to dismiss, and a second ctrl+c then quits normally).

'X' is explicitly NOT scoped to an active search filter - it always
clears the true total (read from daemon status, not len(m.entries),
which would understate the count under a filter and make the
confirmation prompt itself misleading about what's about to happen).

Verified live in tmux against a running daemon with real captured
entries: 'x' shows "delete #N? y/n", 'n' cancels with the entry
untouched, 'y' deletes it and the list/count both refresh correctly;
'X' shows "clear all N history entries (not just this view)? y/n" with
the true count, 'y' empties the database (confirmed via direct SQLite
query: both history and history_fts at 0 rows afterward) and the TUI
correctly shows "history (0)" / "0 requests"; 'x'/'X' on an empty list
correctly no-op without crashing.

go build/vet/gofmt/test/mod tidy all clean.

1 files changed, 14 insertions, 0 deletions

diff --git a/internal/ipc/server.go b/internal/ipc/server.go
index 2879b24..7f77ceb 100644
--- a/internal/ipc/server.go
+++ b/internal/ipc/server.go
@@ -215,6 +215,20 @@ func (s *Server) handleConn(conn net.Conn) {
 			}
 			enc.Encode(Response{Type: "flagged"})
 
+		case "delete_entry":
+			if err := s.db.DeleteEntry(req.ID); err != nil {
+				enc.Encode(Response{Type: "error", Error: err.Error()})
+				continue
+			}
+			enc.Encode(Response{Type: "deleted"})
+
+		case "clear_history":
+			if err := s.db.ClearHistory(); err != nil {
+				enc.Encode(Response{Type: "error", Error: err.Error()})
+				continue
+			}
+			enc.Encode(Response{Type: "cleared"})
+
 		case "rules_list":
 			rs, err := s.db.ListRules()
 			if err != nil {