initial dingger: tmux agent watcher with herdr's detection engine

extract detect-core from herdr's src/detect (engine + 22 manifests,
tests unchanged) and add the dingger binary: tmux capture-pane watcher,
process-tree agent identification, herdr's notification policy, embedded
notification sounds, @agent_state write-back, and catalog-based manifest
refresh. viewer screens are non-observations per the engine contract;
reviewed by a three-model panel (opus 5.5, gpt 6.1 sol, kimi k3) with
all confirmed findings applied as deletions.

1 files changed, 65 insertions, 0 deletions

diff --git a/crates/detect-core/src/manifests/amp.toml b/crates/detect-core/src/manifests/amp.toml
new file mode 100644
index 0000000..1fc5dfa
--- /dev/null
+++ b/crates/detect-core/src/manifests/amp.toml
@@ -0,0 +1,65 @@
+id = "amp"
+version = "2026.07.09.1"
+min_engine_version = 2
+updated_at = "2026-07-09T00:00:00Z"
+aliases = ["amp-local"]
+
+[[rules]]
+id = "osc_title_plugin_confirmation_blocked"
+state = "blocked"
+priority = 1100
+region = "osc_title"
+visible_blocker = true
+contains = ["Plugin confirmation needed"]
+
+[[rules]]
+id = "osc_title_working"
+state = "working"
+priority = 1050
+region = "osc_title"
+visible_working = true
+regex = ['^[\x{2800}-\x{28FF}] ']
+
+[[rules]]
+id = "approval_footer"
+state = "blocked"
+priority = 300
+region = "whole_recent"
+visible_blocker = true
+any = [
+  { contains = ["waiting for approval"] },
+  { contains = ["invoke tool"] },
+  { contains = ["run this command?"] },
+  { contains = ["allow editing file:"] },
+  { contains = ["allow creating file:"] },
+  { contains = ["confirm tool call"] },
+  { contains = ["approve"], any = [{ contains = ["allow all for this session"] }, { contains = ["allow all for every session"] }, { contains = ["allow file for every session"] }, { contains = ["deny with feedback"] }] },
+]
+
+[[rules]]
+id = "status_footer_working"
+state = "working"
+priority = 200
+region = "bottom_non_empty_lines(5)"
+visible_working = true
+line_regex = ['(?i)^\s*╰\s+\S+\s+(thinking|streaming|running tools|waiting)\s+─']
+
+[[rules]]
+id = "esc_cancel_working"
+state = "working"
+priority = 100
+region = "whole_recent"
+visible_working = true
+contains = ["esc to cancel"]
+
+[[rules]]
+id = "osc_title_idle"
+state = "idle"
+priority = 50
+region = "osc_title"
+visible_idle = true
+contains = [" - amp - "]
+not = [
+  { regex = ['^[\x{2800}-\x{28FF}] '] },
+  { contains = ["Plugin confirmation needed"] },
+]