!8 · krz/ambient-companions

README.md +2 −2

		@@ -33,7 +33,7 @@ non-toy outputs (e-ink dashboards, printed posters).
33	33	Reading typing during real work is a keylogger unless it is structurally
34	34	content-free — and unless that is a test, not a sentence in a README.
35	35
36		The invariant (spec §1.5):
	36	The invariant:
37	37
38	38	> No process persists, transmits, or exposes any representation from which the
39	39	> content or identity of an individual keystroke, command argument, or typed
		@@ -144,7 +144,7 @@ ambient-companions/
144	144
145	145	### Language note
146	146
147		The daemon is written in Rust. The spec allows Rust or Go; Rust is chosen
	147	The daemon is written in Rust, chosen
148	148	because it makes the "no content field exists" guarantee enforceable in the
149	149	type system (the `f64`-only `Value` payload), which is the whole point of the
150	150	privacy boundary.

crates/signal-schema/src/lib.rs +2 −3

		@@ -4,7 +4,7 @@
4	4	//!
5	5	//! ## The privacy boundary, made structural
6	6	//!
7		//! Everything in this suite is a footnote to one invariant (spec §1.5):
	7	//! Everything in this suite is a footnote to one invariant:
8	8	//!
9	9	//! > No process persists, transmits, or exposes any representation from which
10	10	//! > the content or identity of an individual keystroke, command argument, or
		@@ -235,8 +235,7 @@ impl Signal {
235	235	}
236	236	}
237	237
238		/// Length-prefixed wire encoding (spec §1.3: "length-prefixed framing over the
239		/// Unix socket").
	238	/// Length-prefixed wire encoding, the framing used over the Unix socket.
240	239	///
241	240	/// The frame is a little-endian `u32` body length followed by the body:
242	241	///

crates/signal-schema/tests/privacy_invariant.rs +11 −11

		@@ -1,10 +1,10 @@
1		//! # The privacy invariant test (spec §1.5)
	1	//! # The privacy invariant test
2	2	//!
3	3	//! This is the single most important test in the project. It exists from day
4	4	//! one, before the sensitive terminal collector does, so the guardrail is in
5	5	//! place before the code it guards.
6	6	//!
7		//! The invariant (spec §1.5):
	7	//! The invariant:
8	8	//!
9	9	//! > No process persists, transmits, or exposes any representation from which
10	10	//! > the content or identity of an individual keystroke, command argument, or
		@@ -17,12 +17,12 @@
17	17	//! content-carrying field (only `tag: Option<Tag>` is a string, and it is
18	18	//! the audited identifier exception).
19	19	//! 3. `forbidden_symbol_scan` — the tree contains none of the banned
20		//! keylogger APIs / shell patterns (the static CI gate).
21		//!
22		//! The runtime differential secret-typing test (drive the hooks with a
23		//! planted secret, assert it never reaches the socket or SQLite in any
24		//! encoding) is stubbed `#[ignore]` below and lands with the terminal
25		//! collector in Phase 2.
	20	//! keylogger APIs / shell patterns (the static gate).
	21	//! 4. `differential_secret_typing` — the runtime gate: drive the real hooks
	22	//! with a planted secret and assert it never reaches the spool or the
	23	//! wire in any encoding. Active. The full-pipeline version, through the
	24	//! collector, the history store and the hub, is
	25	//! `signald/tests/differential_secret_typing.rs`.
26	26
27	27	use std::mem::size_of;
28	28	use std::path::PathBuf;
		@@ -77,7 +77,7 @@ fn wire_format_has_no_content_field() {
77	77	);
78	78	}
79	79
80		/// The static CI gate (spec §1.5): the tree must contain none of the APIs a
	80	/// The static gate: the tree must contain none of the APIs a
81	81	/// real keylogger would use, nor any shell hook that touches the line buffer.
82	82	/// Any hit fails the build. The banned list itself lives here and is reviewed.
83	83	#[test]
		@@ -134,8 +134,8 @@ fn forbidden_symbol_scan() {
134	134	);
135	135	}
136	136
137		/// The differential secret-typing acceptance test (spec §1.5, §5 Phase 2) —
138		/// the ship gate for the terminal collector, now active.
	137	/// The differential secret-typing acceptance test — the ship gate for the
	138	/// terminal collector.
139	139	///
140	140	/// This drives the real production hook (`shell-hooks/signald-hooks.zsh`)
141	141	/// through a real interactive zsh under a real pseudo-terminal (zsh's own

crates/signald/src/history.rs +1 −1

		@@ -1,4 +1,4 @@
1		//! # History store (spec §1.3, §4)
	1	//! # History store
2	2	//!
3	3	//! A local SQLite (WAL) store of a rolling history of signals. History is what
4	4	//! lets a renderer read recent aggregates rather than only a live snapshot —

crates/signald/src/hub.rs +2 −2

		@@ -1,10 +1,10 @@
1		//! # The signal hub — last-value cache + live fan-out (spec §1.3)
	1	//! # The signal hub — last-value cache + live fan-out
2	2	//!
3	3	//! The in-memory heart of the publish side. Collectors [`Hub::publish`] signals;
4	4	//! subscribers [`Hub::subscribe`] and receive the current value of every cached
5	5	//! metric immediately, then a live stream of updates.
6	6	//!
7		//! Subscription semantics (spec §1.3): last-value-cache + live stream. On
	7	//! Subscription semantics: last-value-cache + live stream. On
8	8	//! subscribe, the caller is handed the latest value of each `name` (keyed by
9	9	//! name + audited tag), so a renderer paints correct state at once; thereafter
10	10	//! it receives updates as they are published. Channels are unbounded, so a slow

crates/signald/src/lib.rs +8 −8

		@@ -34,11 +34,11 @@ pub fn tag_within_roots(sig: &Signal, roots: &[PathBuf]) -> bool {
34	34	roots.iter().any(\|root\| path.starts_with(root))
35	35	}
36	36
37		/// Collectors: each reduces its domain to schema scalars (spec §1.1, §1.4).
	37	/// Collectors: each reduces its domain to schema scalars.
38	38	pub mod collectors {
39	39	/// Git collector: shell out to `git` for counts and ages. Counts and
40	40	/// branch/age scalars only — never diff content. This is the cleanest
41		/// signal in the suite and the first collector wired (spec §2.2, §3).
	41	/// signal in the suite and the first collector wired.
42	42	pub mod git {
43	43	use std::path::Path;
44	44	use std::process::Command;
		@@ -52,7 +52,7 @@ pub mod collectors {
52	52
53	53	/// Derive the aggregate git signals for one repo. Every value is a
54	54	/// scalar `f64`; the only string on the wire is the repo path carried
55		/// in the audited `tag` (spec §1.2). Returns an empty vec if `repo` is
	55	/// in the audited `tag`. Returns an empty vec if `repo` is
56	56	/// not a git repo.
57	57	pub fn collect(repo: &Path) -> Vec<Signal> {
58	58	if !is_git_repo(repo) {
		@@ -278,7 +278,7 @@ pub mod collectors {
278	278	source: Source::Terminal,
279	279	name,
280	280	value: Value(value),
281		tag: None, // terminal aggregates are never tagged (spec §1.2)
	281	tag: None, // terminal aggregates are never tagged
282	282	};
283	283	vec![
284	284	mk(SignalName::KeysPerMin, keys_per_min),
		@@ -363,7 +363,7 @@ pub mod collectors {
363	363	}
364	364
365	365	/// System + hardware collector: IOKit-only, no powermetrics, no root
366		/// (spec §1.4). Native macOS.
	366	/// Native macOS.
367	367	///
368	368	/// The reads live out of process in the sibling Swift package
369	369	/// `macos-collector/` (SwiftPM, not in this cargo workspace), which writes
		@@ -436,13 +436,13 @@ pub mod collectors {
436	436	}
437	437	}
438	438
439		/// The publish side (spec §1.3): a live pub/sub fan-out with a last-value cache.
	439	/// The publish side: a live pub/sub fan-out with a last-value cache.
440	440	///
441	441	/// On connect a subscriber is handed the current value of every cached `name`
442	442	/// immediately (so a renderer paints correct state at once), then streams
443	443	/// updates as they change. Each subscriber runs on its own thread with its own
444		/// unbounded channel, so a slow subscriber never blocks the daemon (spec §1.3:
445		/// "a stuck wallpaper process must not stall the audio thread's feed").
	444	/// unbounded channel, so a slow subscriber never blocks the daemon: one stuck
	445	/// renderer must not stall any other subscriber's feed.
446	446	pub mod publish {
447	447	use std::io;
448	448	use std::io::Write;

crates/signald/src/main.rs +2 −2

		@@ -2,7 +2,7 @@
2	2	//!
3	3	//! The one long-lived, user-level daemon that owns every collector and
4	4	//! publishes a signal stream. Renderers are thin subscribers over a local Unix
5		//! socket — no renderer ever touches a sensor (spec §1.3).
	5	//! socket — no renderer ever touches a sensor.
6	6	//!
7	7	//! ```text
8	8	//! zsh hooks ───▶ terminal collector ─┐ (aggregate counts from the spool)
		@@ -167,7 +167,7 @@ fn default_socket_path() -> PathBuf {
167	167
168	168	/// Log enabled collectors and assert none holds an input-tap capability. A real
169	169	/// keylogger would need one of the forbidden APIs; their absence is the point,
170		/// and this is the runtime half of that guarantee (spec §1.5).
	170	/// and this is the runtime half of that guarantee.
171	171	fn print_self_attestation(cfg: &Config) {
172	172	eprintln!("signald {} — self-attestation", env!("CARGO_PKG_VERSION"));
173	173	eprintln!(" transport: unix socket (length-prefixed frames), live pub/sub");

crates/signald/tests/differential_secret_typing.rs +2 −2

		@@ -1,4 +1,4 @@
1		//! # The differential secret-typing test — the privacy ship-gate (spec §1.5, §5)
	1	//! # The differential secret-typing test — the privacy ship-gate
2	2	//!
3	3	//! This is the acceptance test for the whole terminal collector, and the single
4	4	//! most important test in the project. It drives the real production hook
		@@ -150,7 +150,7 @@ zpty -d SH 2>/dev/null
150	150
151	151	// --- encodings + scanning ---
152	152
153		/// The secret in every representation the spec calls out (plain, reversed, hex,
	153	/// The secret in every representation worth checking (plain, reversed, hex,
154	154	/// base64), as raw byte needles to search for.
155	155	fn secret_encodings(secret: &str) -> Vec<(&'static str, Vec<u8>)> {
156	156	let b = secret.as_bytes();

crates/signald/tests/git_collector.rs +1 −1

		@@ -1,4 +1,4 @@
1		//! Git collector acceptance test (spec §5 Phase 1).
	1	//! Git collector acceptance test.
2	2	//!
3	3	//! Builds a real temp git repo, drives the collector against it, and asserts the
4	4	//! aggregate scalars — commits-in-window, commits-today, branch count, and

crates/signald/tests/streaming.rs +1 −1

		@@ -1,4 +1,4 @@
1		//! Live-streaming acceptance test (spec §1.3): a subscriber gets the current
	1	//! Live-streaming acceptance test: a subscriber gets the current
2	2	//! value of each metric immediately on connect (last-value cache), then receives
3	3	//! updates as values change — over the real Unix socket, not just the hub.
4	4

crates/terminal-garden/src/lib.rs +2 −3

		@@ -6,7 +6,7 @@
6	6	//!
7	7	//! Each watched repo is a plot; growth stage is a function of recent commit
8	8	//! activity and health (wilt) is a function of days-since-last-commit
9		//! (spec §2.2). A plant advances 🌱→🌿→🌳 as commits land, and droops then
	9	//! A plant advances 🌱→🌿→🌳 as commits land, and droops then
10	10	//! browns as a repo goes stale.
11	11
12	12	use std::collections::BTreeMap;
		@@ -148,8 +148,7 @@ pub fn plots_from_signals(signals: &[Signal]) -> Vec<Plot> {
148	148	by_repo.into_values().collect()
149	149	}
150	150
151		/// Render the whole garden to a text block (spec §2.2: a text render is fine for
152		/// v0.1).
	151	/// Render the whole garden to a text block.
153	152	pub fn render(plots: &[Plot]) -> String {
154	153	let mut out = String::new();
155	154	out.push_str("terminal-garden\n");

crates/terminal-garden/src/main.rs +2 −2

		@@ -1,6 +1,6 @@
1	1	//! # terminal-garden
2	2	//!
3		//! The first face (spec §3: "the garden is the recommended first build").
	3	//! The first face of the bus: a renderer, not a collector.
4	4	//! Git is the cleanest signal in the suite — discrete, unambiguous, no privacy
5	5	//! questions — so the garden proves the bus before anything reads the shell.
6	6	//!
		@@ -25,7 +25,7 @@ use std::path::PathBuf;
25	25	use signal_schema::{wire, Signal, SignalName};
26	26	use terminal_garden::{plots_from_signals, render};
27	27
28		/// The `name`s the garden cares about (spec §2.2 — the git aggregates).
	28	/// The `name`s the garden cares about: the git aggregates.
29	29	const SUBSCRIBE: &[SignalName] = &[
30	30	SignalName::CommitsWindow,
31	31	SignalName::CommitsToday,

macos-collector/README.md +5 −5

		@@ -28,14 +28,14 @@ swift run macos-collector --once # one real IOKit read (summary on stderr)
28	28
29	29	Intentionally omitted: GPU utilization and fan RPM. They are reachable in
30	30	principle via `IOReport`/AppleSMC, but only through chip-generation-specific,
31		undocumented channels. Per spec §1.4/§6, a metric that cannot be read cleanly
32		without root is omitted from the schema rather than gated behind sudo.
	31	undocumented channels. A metric that cannot be read cleanly without root is
	32	omitted from the schema rather than gated behind sudo.
33	33	Battery signals are omitted on a machine with no internal battery (a desktop).
34	34
35	35	Every value is an aggregate scalar. This collector has no code path that can
36	36	read user content: it touches only hardware counters and power registers. The
37	37	`f64`-only payload and the absence of any input-tap API mean the privacy
38		invariant (spec §1.5) holds for hardware signals exactly as it does for the
	38	invariant holds for hardware signals exactly as it does for the
39	39	terminal collector — and the repo's `forbidden_symbol_scan` gate scans these
40	40	`.swift` files too.
41	41
		@@ -94,8 +94,8 @@ This identical literal is asserted in both:
94	94
95	95	Because both sides independently commit to the same bytes, cross-process
96	96	execution is not required to prove they agree — the shared literal is the proof.
97		(A live `swift run macos-collector --once --hex` produces frames that decode
98		byte-for-byte to this layout; see the project README for a captured run.)
	97	(`swift run macos-collector --once --hex` prints real frames in this layout if
	98	you want to check by hand.)
99	99
100	100	## Wiring into signald
101	101

macos-collector/Sources/CollectorCore/Hardware.swift +4 −4

		@@ -2,7 +2,7 @@ import Foundation
2	2	import IOKit
3	3	import IOKit.ps
4	4
5		// The hardware reads. IOKit-only, no `powermetrics`, no root (spec §1.4, §6):
	5	// The hardware reads. IOKit-only, no `powermetrics`, no root:
6	6	// * CPU load — Mach `host_processor_info(PROCESSOR_CPU_LOAD_INFO)` deltas
7	7	// * battery % — IOKit power sources (`IOPSCopyPowerSourcesInfo`)
8	8	// * charging — IOKit power sources
		@@ -10,9 +10,9 @@ import IOKit.ps
10	10	// * thermal — `ProcessInfo.thermalState` (aggregate enum, no root)
11	11	//
12	12	// GPU utilization and fan RPM are reachable in principle via `IOReport`/AppleSMC
13		// but only with chip-generation-specific, undocumented channel spelunking; per
14		// spec §1.4 a metric that cannot be read cleanly without root is *omitted from
15		// the schema* rather than gated behind sudo. They are intentionally absent here.
	13	// but only with chip-generation-specific, undocumented channel spelunking. A
	14	// metric that cannot be read cleanly without root is omitted from the schema
	15	// rather than gated behind sudo. They are intentionally absent here.
16	16	//
17	17	// Every value produced is an aggregate scalar. There is no code path here that
18	18	// reads user content — this file cannot, because it only ever touches hardware

shell-hooks/README.md +3 −3

		@@ -1,14 +1,14 @@
1	1	# shell-hooks
2	2
3		Shell side of the terminal collector (spec §1.4). Live as of v0.2. These
	3	Shell side of the terminal collector. Live as of v0.2. These
4	4	snippets belong in the dotfiles repo and are sourced by the user's `.zshrc`;
5	5	they are kept here so the privacy contract lives next to the code it constrains
6	6	(and so the differential secret-typing test can drive the real file).
7	7
8	8	## The one rule
9	9
10		Aggregate-only. The hooks emit counts, durations, and exit codes. They
11		never read, store, or transmit the content of a command or a keystroke.
	10	Aggregate-only. The hooks emit a keystroke count and a session duration.
	11	They never read, store, or transmit the content of a command or a keystroke.
12	12
13	13	- No input tap, no `CGEventTap`, no PTY sniffing.
14	14	- Never reference the `zle` line buffer or capture argv.

shell-hooks/signald-hooks.zsh +3 −3

		@@ -1,11 +1,11 @@
1		# signald-hooks.zsh — terminal collector, shell side (spec §1.4).
	1	# signald-hooks.zsh — terminal collector, shell side.
2	2	#
3	3	# A small sourced script that lives in the dotfiles repo and is sourced by the
4	4	# user's .zshrc. It talks to signald by appending newline-delimited AGGREGATE
5	5	# COUNT records to a spool file that signald reads. It holds no history.
6	6	#
7	7	# ============================ PRIVACY CONTRACT ============================
8		# AGGREGATE-ONLY. This script emits COUNTS, DURATIONS, and EXIT CODES.
	8	# AGGREGATE-ONLY. This script emits a KEYSTROKE COUNT and a SESSION DURATION.
9	9	# It NEVER reads, stores, or transmits the content of a command or a keystroke.
10	10	#
11	11	# - No input tap (none of the global event-tap / HID keyboard APIs). No
		@@ -15,7 +15,7 @@
15	15	# it; the character is never assigned to a variable that outlives the widget
16	16	# and never leaves the shell. What leaves is a count.
17	17	# - It NEVER references the zle line buffer (the BUFFER/LBUFFER/RBUFFER zle
18		# parameters) and NEVER captures argv. The forbidden-symbol CI scan
	18	# parameters) and NEVER captures argv. The forbidden-symbol scan
19	19	# (crates/signal-schema/tests/privacy_invariant.rs) fails the build if it
20	20	# ever does. That test — plus the differential secret-typing test — drives
21	21	# THIS FILE with a planted secret and asserts the secret never reaches the

Strip references to the uncommitted spec and fix doc drift !8