Pick a resource's public IP from the edge's addresses, labeled with the domains pointed at each

A hostname under a domain that points at one of the edge's addresses selects that address. An address
saved earlier stays selectable even before the edge reports it.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

README.md

@@ -73,7 +73,7 @@ Releases are published for x86-64 only; for ARM machines build it yourself (`TAR
 
 Set `HAMMERHEAD_AUTO_UPDATE=1` (or pass `-auto-update`) and Hammerhead checks this server for a newer release every few hours, verifies it against `SHA256SUMS`, checks that the new binary runs, swaps it in and restarts itself. It only follows full releases (never pre-releases), never downgrades, and keeps the old binary if anything looks wrong. `setup.sh` turns it on. It is not available on Windows, and it is for the systemd and plain-binary installs: with Docker, pull a new image instead.
 
-Edges and sites report their version, so Server → Edges and Sites show which release each one runs and flag a newer one. An **Update** button appears for any machine that runs with auto-update on (`BLACKTIP_AUTO_UPDATE=1` / `BAMBOO_AUTO_UPDATE=1`): it asks that machine to install the newest release now, and the result is shown in the table. Under Server → Settings, **Check for updates** does the same lookup for Hammerhead itself, with an **Update now** button when auto-update is on. A machine without auto-update never installs anything on request.
+Edges and sites report their version, so Server → Edges and Sites show which release each one runs and flag a newer one. An **Update** button appears for any machine that runs with auto-update on (`BLACKTIP_AUTO_UPDATE=1` / `BAMBOO_AUTO_UPDATE=1`): it asks that machine to install the newest release now, and the result is shown in the table. Under Server → Settings, **Check for updates** does the same lookup for Hammerhead itself, with an **Update now** button when auto-update is on. A machine without auto-update never installs anything on request. Starting an update opens a progress bar with the live log of what the machine is doing (checking, downloading, verifying, installing, restarting). Hammerhead keeps the log of its own last update in `update.log` in its data folder, so it is still there after the restart.
 
 **With Docker**
 
@@ -259,6 +259,10 @@ Blacktip redirects an unauthenticated visitor to Hammerhead's login page. Hammer
 token with a per-edge key and sends the visitor back; Blacktip verifies it and sets a cookie. The same
 decision function runs in both proxy modes.
 
+## Design
+
+The dashboard follows the Lightwell design language: warm neutrals, one teal accent, system fonts, status badges with text, and dialogs that name what they affect. See [docs/design.md](docs/design.md). `node scripts/lint-design.mjs` checks the rules that a machine can check.
+
 ## Limits and notes
 
 - No client-to-site VPN (Pangolin's Olm/private resources) and no blueprints/YAML import.

accounts.go

@@ -66,7 +66,7 @@ func (s *Server) withUser(fn func(http.ResponseWriter, *http.Request, *principal
 	return func(w http.ResponseWriter, r *http.Request) {
 		p := s.principalFrom(r)
 		if p == nil || p.User.ID == "" {
-			fail(w, 401, errors.New("not logged in"))
+			fail(w, 401, errors.New("Sign in to continue."))
 			return
 		}
 		fn(w, r, p)
@@ -96,7 +96,7 @@ func (s *Server) withOrg(needAdmin bool, fn func(http.ResponseWriter, *http.Requ
 	return func(w http.ResponseWriter, r *http.Request) {
 		p := s.principalFrom(r)
 		if p == nil {
-			fail(w, 401, errors.New("not logged in"))
+			fail(w, 401, errors.New("Sign in to continue."))
 			return
 		}
 		id := r.PathValue("org")
@@ -169,7 +169,7 @@ func (s *Server) createFirstAdmin(email, name, password, orgName string) error {
 	s.mu.Lock()
 	defer s.mu.Unlock()
 	if len(s.st.Users) != 0 {
-		return errors.New("setup already done")
+		return errors.New("Hammerhead is already set up. Sign in instead.")
 	}
 	u := &User{ID: newID(), Email: email, Name: name, PassHash: hash, ServerAdmin: true, Created: time.Now()}
 	s.st.Users = append(s.st.Users, u)
@@ -240,7 +240,7 @@ func (s *Server) login(w http.ResponseWriter, r *http.Request) {
 	}
 	email := strings.ToLower(strings.TrimSpace(in.Email))
 	if !s.allow("login|"+clientIP(r)+"|"+email, 8, 5*time.Minute) {
-		fail(w, 429, errors.New("too many attempts, wait a few minutes"))
+		fail(w, 429, errors.New("Too many attempts. Wait a few minutes and try again."))
 		return
 	}
 	s.mu.Lock()
@@ -254,7 +254,7 @@ func (s *Server) login(w http.ResponseWriter, r *http.Request) {
 	if u == nil || !good || u.PassHash == "" {
 		s.audit("", email, "login.failed", clientIP(r))
 		time.Sleep(300 * time.Millisecond)
-		fail(w, 401, errors.New("wrong email or password"))
+		fail(w, 401, errors.New("That email and password do not match. Check them and try again."))
 		return
 	}
 	if u.TOTPEnabled {
@@ -276,7 +276,7 @@ func (s *Server) loginTOTP(w http.ResponseWriter, r *http.Request) {
 		return
 	}
 	if !s.allow("totp|"+clientIP(r), 10, 5*time.Minute) {
-		fail(w, 429, errors.New("too many attempts, wait a few minutes"))
+		fail(w, 429, errors.New("Too many attempts. Wait a few minutes and try again."))
 		return
 	}
 	s.mu.Lock()
@@ -307,7 +307,7 @@ func (s *Server) loginTOTP(w http.ResponseWriter, r *http.Request) {
 	}
 	s.mu.Unlock()
 	if !good {
-		fail(w, 401, errors.New("wrong code"))
+		fail(w, 401, errors.New("That code is not right. Check your authenticator and try again."))
 		return
 	}
 	s.startSession(w, r, u.ID)
@@ -413,7 +413,7 @@ func (s *Server) changePassword(w http.ResponseWriter, r *http.Request, p *princ
 		return
 	}
 	if p.User.PassHash != "" && bcrypt.CompareHashAndPassword([]byte(p.User.PassHash), []byte(in.Current)) != nil {
-		fail(w, 400, errors.New("current password is wrong"))
+		fail(w, 400, errors.New("Your current password is not right. Check it and try again."))
 		return
 	}
 	hash, err := hashPassword(in.New)
@@ -464,7 +464,7 @@ func (s *Server) totpEnable(w http.ResponseWriter, r *http.Request, p *principal
 	defer s.mu.Unlock()
 	u := s.findUser(p.User.ID)
 	if u.TOTPSecret == "" || !totpOK(u.TOTPSecret, strings.TrimSpace(in.Code)) {
-		fail(w, 400, errors.New("that code doesn't match; check your authenticator's clock"))
+		fail(w, 400, errors.New("That code does not match. Check that your authenticator's clock is right and try again."))
 		return
 	}
 	codes, hashes := make([]string, 8), make([]string, 8)
@@ -483,14 +483,14 @@ func (s *Server) totpDisable(w http.ResponseWriter, r *http.Request, p *principa
 		return
 	}
 	if p.User.PassHash != "" && bcrypt.CompareHashAndPassword([]byte(p.User.PassHash), []byte(in.Password)) != nil {
-		fail(w, 400, errors.New("password is wrong"))
+		fail(w, 400, errors.New("That password is not right. Check it and try again."))
 		return
 	}
 	s.mu.Lock()
 	defer s.mu.Unlock()
 	u := s.findUser(p.User.ID)
 	if !totpOK(u.TOTPSecret, strings.TrimSpace(in.Code)) {
-		fail(w, 400, errors.New("code is wrong"))
+		fail(w, 400, errors.New("That code is not right. Check your authenticator and try again."))
 		return
 	}
 	u.TOTPEnabled, u.TOTPSecret, u.BackupCodes = false, "", nil

agent.go

@@ -111,7 +111,9 @@ func (s *Server) edgeReport(w http.ResponseWriter, r *http.Request) {
 	}
 	e.LastSeen = time.Now()
 	e.IPs = in.IPs
+	oldVersion := e.Version
 	answered := noteUpdateReport(&e.Version, &e.AutoUpdate, &e.UpdateID, &e.UpdateMsg, in.Version, in.AutoUpdate, in.UpdateID, in.UpdateMsg)
+	s.recordUpdateProgress(e.ID, in.UpdateID, in.UpdateStage, in.UpdatePct, in.UpdateLog, oldVersion, e.Version)
 	for _, x := range s.st.MailEgress {
 		if x.EdgeID == e.ID {
 			if chk, found := in.MailChecks[x.ID]; found {
@@ -253,7 +255,9 @@ func (s *Server) siteReport(w http.ResponseWriter, r *http.Request) {
 		in.Connected = []string{}
 	}
 	st.Connected = in.Connected
+	oldVersion := st.Version
 	answered := noteUpdateReport(&st.Version, &st.AutoUpdate, &st.UpdateID, &st.UpdateMsg, in.Version, in.AutoUpdate, in.UpdateID, in.UpdateMsg)
+	s.recordUpdateProgress(st.ID, in.UpdateID, in.UpdateStage, in.UpdatePct, in.UpdateLog, oldVersion, st.Version)
 	s.containers[st.ID] = in.Containers
 	for _, x := range s.st.MailEgress {
 		if x.SiteID != st.ID {

alerts_api.go

@@ -156,7 +156,7 @@ func (s *Server) alertSettings(w http.ResponseWriter, r *http.Request, sc alertS
 		return
 	}
 	if in.DebounceMin < 1 || in.DebounceMin > 120 || in.RepeatHours < 0 || in.RepeatHours > 168 {
-		fail(w, 400, errors.New("wait 1-120 minutes before alerting; remind every 0-168 hours (0 = never)"))
+		fail(w, 400, errors.New("Wait 1 to 120 minutes before alerting, and remind every 0 to 168 hours (0 means no reminders)."))
 		return
 	}
 	s.mu.Lock()

docs/design.md

@@ -0,0 +1,64 @@
+# Hammerhead design language
+
+The dashboard and the visitor sign-in page follow the Lightwell design language. The reference is `docs/design.md` in the Lightwell repository. This page records how that language is applied here and where Hammerhead needs its own pieces. When the two disagree, Lightwell's document wins.
+
+## What is shared with Lightwell
+
+* **Tokens.** Colors, spacing (4px scale), radius (6px and 10px), type sizes (12 to 28px), the single shadow and the dark theme are the Lightwell values. The accent is Lightwell's teal, `#1f5c5c`, with white text on it. Everything derived from the accent uses `color-mix`.
+* **Principles.** Quiet neutrals with one accent, plain and specific wording, one way to do each thing, calm density, and WCAG 2.1 AA.
+* **Voice.** No emoji, no em or en dashes, no exclamation marks, sentence case, buttons that name the result, and errors that say what happened and what to do next. Errors that come from the server are capitalized in one place (`fail` in `store.go`).
+* **Status carries text.** A status is a badge with a label ("Online", "Listening", "Down"), never a colored dot on its own.
+
+## Where it lives
+
+| File | What it holds |
+| --- | --- |
+| `web/index.html` | The dashboard. The token block sits between `tokens:begin` and `tokens:end`; raw colors are allowed only there. |
+| `web/resource.html` | The sign-in page that visitors see in front of a protected resource. Same token block. |
+
+Both are single files with no build step, so the token block is repeated in each. Change a token in both.
+
+## Components
+
+Built from the helpers at the top of the script in `web/index.html`. Feature code uses these and does not style one-off.
+
+| Helper | Use |
+| --- | --- |
+| `card`, `pageHeader` | Surfaces and the page title with its one primary action |
+| `field`, `chk` | Label above the control, hint below |
+| `badge(text, tone)` | Status pill. Tones: success, warning, danger, accent, or none for neutral |
+| `emptyState(icon, title, text, action)` | Dashed outline, icon, a title that says "No X yet", one sentence |
+| `modal`, `dialogForm` | Dialogs. Focus moves in, Tab stays inside, Escape closes, focus returns to the opener |
+| `confirmDialog`, `ask` | Every destructive action. The title names the object, the body says what is lost and whether it can be undone |
+| `toast` | Confirmations at the bottom right. Errors stay longer and are announced as alerts |
+| `skeleton` | Placeholder rows while a page loads, not a spinner |
+| `updatePanel` | Progress bar and live log for an update |
+
+## Icons
+
+Lucide style, outline only, stroke 1.75, round caps, `currentColor`. Sizes are 16, 18 and 22 pixels. They are inline in the `ICONS` table. An icon goes with a text label, and icon-only buttons carry an `aria-label`.
+
+Approved names: `fin`, `mine`, `ports`, `sites`, `domains`, `access`, `logs`, `edges`, `orgs`, `users`, `idps`, `settings`, `audit`, `account`, `egress`, `alerts`, `out`, `menu`, `close`, `add`, `check`, `light`, `dark`, `alert`. Add a name here and in `ICONS` together.
+
+## Patterns
+
+* **One primary action per view.** It sits in the page header. Smaller forms inside a page use the default button.
+* **List pages** show the page header, then the table in a card with no second title.
+* **Dialogs and forms** end with Cancel and then the primary action, at the bottom right. Labels sit above fields, and rules such as "At least 8 characters" are hints below them, not part of the label.
+* **Dates** have the month written out ("Nov 2, 2026"), with `fmtDate` and `fmtTime`.
+* **Empty states** say why the list is empty: nothing yet, or nothing matching the filters.
+* **Long machine messages**, such as certificate errors, wrap and stop at three lines (`.clip`), with the full text in a tooltip.
+
+## Layout
+
+* Admin content is capped at 1120px. Below 860px the sidebar becomes a slide-in drawer with a top bar, and grids collapse. Phones keep a 16px side gutter.
+* On touch screens controls are at least 44px high and inputs are 16px so the page does not zoom.
+* Motion is minimal and turns off under `prefers-reduced-motion`. The theme follows the system and can be switched from the sidebar.
+
+## Checking a change
+
+```
+node scripts/lint-design.mjs
+```
+
+It fails on em and en dashes, emoji, and raw colors outside the token block, in the pages, the docs and the Go source. Then check the page in light and dark, at phone and desktop width, using only the keyboard.

e2e/updates_test.go

@@ -58,12 +58,23 @@ func TestEdgesAndSitesReportVersionsAndUpdateOnRequest(t *testing.T) {
 	var edgeCalls, siteCalls atomic.Int32
 	siteCfgHook = func(c *bamboo.Config) {
 		c.Version, c.AutoUpdate = "v0.1.0", true
-		c.UpdateNow = func(ctx context.Context) (string, error) { siteCalls.Add(1); return "", nil }
+		c.UpdateNow = func(ctx context.Context, progress func(string, int, string)) (string, error) {
+			siteCalls.Add(1)
+			progress("checking", 10, "Checking for the newest release")
+			progress("done", 100, "Already on the newest release")
+			return "", nil
+		}
 	}
 	defer func() { siteCfgHook = nil }()
 	w := setup(t, blacktip.TraefikConfig{}, func(c *blacktip.Config) {
 		c.Version, c.AutoUpdate = "v0.1.0", true
-		c.UpdateNow = func(ctx context.Context) (string, error) { edgeCalls.Add(1); return "v0.2.0", nil }
+		c.UpdateNow = func(ctx context.Context, progress func(string, int, string)) (string, error) {
+			edgeCalls.Add(1)
+			progress("downloading", 40, "Downloading blacktip_v0.2.0_linux_amd64.tar.gz")
+			progress("downloading", 70, "Downloaded 28.0 of 40.0 MB (70%)")
+			progress("restarting", 100, "Installed v0.2.0; restarting into it")
+			return "v0.2.0", nil
+		}
 	})
 
 	waitFor(t, "the edge to report its version", func() bool { e := w.edgeRow(); return e.Version == "v0.1.0" && e.AutoUpdate })
@@ -77,6 +88,17 @@ func TestEdgesAndSitesReportVersionsAndUpdateOnRequest(t *testing.T) {
 	if edgeCalls.Load() != 1 {
 		t.Fatalf("the edge ran its update %d times, want 1", edgeCalls.Load())
 	}
+	var log struct {
+		Running bool
+		Stage   string
+		Pct     int
+		Lines   []string
+	}
+	w.admin.must("GET", "/api/edges/"+w.edge+"/update/log", nil, &log)
+	text := strings.Join(log.Lines, "; ")
+	if log.Running || log.Stage != "restarting" || log.Pct != 100 || !strings.Contains(text, "Update requested") || !strings.Contains(text, "Downloaded 28.0 of 40.0 MB") || !strings.Contains(text, "restarting into it") {
+		t.Fatalf("edge update log: %+v (%s)", log, text)
+	}
 
 	w.admin.must("POST", "/api/orgs/"+w.org+"/sites/"+w.site+"/update", nil, nil)
 	waitFor(t, "the site to answer the update request", func() bool {
@@ -86,6 +108,10 @@ func TestEdgesAndSitesReportVersionsAndUpdateOnRequest(t *testing.T) {
 	if siteCalls.Load() != 1 {
 		t.Fatalf("the site ran its update %d times, want 1", siteCalls.Load())
 	}
+	w.admin.must("GET", "/api/orgs/"+w.org+"/sites/"+w.site+"/update/log", nil, &log)
+	if log.Running || log.Stage != "done" || !strings.Contains(strings.Join(log.Lines, "; "), "Already on the newest release") {
+		t.Fatalf("site update log: %+v", log)
+	}
 
 	// asking again works and is a fresh request, not a leftover answer
 	w.admin.must("POST", "/api/edges/"+w.edge+"/update", nil, nil)

go.mod

@@ -3,9 +3,9 @@ module git.veillax.com/Veillax/hammerhead
 go 1.27.3
 
 require (
-	git.veillax.com/Veillax/bamboo v0.1.4
-	git.veillax.com/Veillax/blacktip v0.1.6
-	git.veillax.com/Veillax/reef v0.1.6
+	git.veillax.com/Veillax/bamboo v0.1.5
+	git.veillax.com/Veillax/blacktip v0.1.7
+	git.veillax.com/Veillax/reef v0.1.7
 	github.com/emersion/go-msgauth v0.7.0
 	golang.org/x/crypto v0.58.0
 	modernc.org/sqlite v1.61.0

go.sum

@@ -4,12 +4,16 @@ git.veillax.com/Veillax/bamboo v0.1.3 h1:A66gz9GmmtUq1iIGUAL2ItIeC6iTy5pvqJOoIjR
 git.veillax.com/Veillax/bamboo v0.1.3/go.mod h1:UuHV6aNHmV9jpow0xeGlXX0QhMB9glPJUGzgIM7S1MM=
 git.veillax.com/Veillax/bamboo v0.1.4 h1:pgiBJA46CBJx7T3bloCjPekb6wl6W5H8teokFAH5gj0=
 git.veillax.com/Veillax/bamboo v0.1.4/go.mod h1:wzSpfql7U4a3b9mCVH01OPG9H9szrzwSFDufWw02e0g=
+git.veillax.com/Veillax/bamboo v0.1.5 h1:i81c75/7wjayP9tOQ3tSnJWTBhvbjAwNBEPhT+3P2Xk=
+git.veillax.com/Veillax/bamboo v0.1.5/go.mod h1:se4kkcP6c3uCGD4HQd+nDLoblS0lN8qa+eFWLo5Horw=
 git.veillax.com/Veillax/blacktip v0.1.0 h1:L8WpW56gqtvZ1IAapE95Ynl6NKjqTA98WwmEH01kFFk=
 git.veillax.com/Veillax/blacktip v0.1.0/go.mod h1:sj+mr8393rajzWbl0+RRZrstGyDtZ/GHsut6ebScVxg=
 git.veillax.com/Veillax/blacktip v0.1.4 h1:o3uNoA0ucB/qcN9ccofysdFA6RTEU4jKdgeTWuE2Uw0=
 git.veillax.com/Veillax/blacktip v0.1.4/go.mod h1:f7zXCYlQf/9ffDLjPrMHylKAyXX4Nb+aQ7kErmOOhqI=
 git.veillax.com/Veillax/blacktip v0.1.6 h1:dUJzNGXgieWX05ftWjnMfh6norhaeKTqo1P13lJvjtk=
 git.veillax.com/Veillax/blacktip v0.1.6/go.mod h1:ZnPRc2gPh9ElILfPH39G/x3B6KAiHQyeoDLycSDgVPM=
+git.veillax.com/Veillax/blacktip v0.1.7 h1:PjxEkhE4fnGWht9Pj2/l6S8fOX2Iqjir3rc9vfpMFiQ=
+git.veillax.com/Veillax/blacktip v0.1.7/go.mod h1:dVm4wC6wufPjFzK8pvHnqNJJlxroRYmnq8mdkCqOKGc=
 git.veillax.com/Veillax/reef v0.1.0 h1:O0OhEKFx2CsvACJ20sfzJNjGsngomtfDdKdxu4ROpCs=
 git.veillax.com/Veillax/reef v0.1.0/go.mod h1:ZBUd/BARO5kkpUNTP81TTY1aQXLHFR6bKDhCxckjHso=
 git.veillax.com/Veillax/reef v0.1.3 h1:RxSq2xwaup1+MieAkhlvOTZnYwPf19thFHEAe/7VxsI=
@@ -18,6 +22,8 @@ git.veillax.com/Veillax/reef v0.1.4 h1:T2+B8P1GAitEyTYRkwMT3UHbG9mN5zXb/inE2muXd
 git.veillax.com/Veillax/reef v0.1.4/go.mod h1:ZBUd/BARO5kkpUNTP81TTY1aQXLHFR6bKDhCxckjHso=
 git.veillax.com/Veillax/reef v0.1.6 h1:NgZ4u2Z3hJ+BYD/zX9lov8fox4s2i8txtYNOpIsikVo=
 git.veillax.com/Veillax/reef v0.1.6/go.mod h1:ZBUd/BARO5kkpUNTP81TTY1aQXLHFR6bKDhCxckjHso=
+git.veillax.com/Veillax/reef v0.1.7 h1:5C2udonlJac2xvDOE5e+zDxej+AbZ9ttrNSE4owmwuU=
+git.veillax.com/Veillax/reef v0.1.7/go.mod h1:ZBUd/BARO5kkpUNTP81TTY1aQXLHFR6bKDhCxckjHso=
 github.com/Microsoft/go-winio v0.6.4 h1:kJF2pamtYCWXf0xAT8sAkwKC0pMl2HYBrRPHAqyUc+g=
 github.com/Microsoft/go-winio v0.6.4/go.mod h1:1xl5JXG4ze/m74GH6Dc4Mwxfc3VL5siRVQjIAlHH07U=
 github.com/dustin/go-humanize v1.1.0 h1:dbKTrvD0klcbBV/h4AWJdMuZogJACoMlvWIWZ5b2xWg=

mappings.go

@@ -87,7 +87,7 @@ func (s *Server) validateMapping(c *orgCtx, m *model.Mapping) error {
 			return errors.New("every target needs a host (e.g. 127.0.0.1 or 192.168.1.20)")
 		}
 		if t.Port < 1 || t.Port > 65535 {
-			return errors.New("target ports must be 1-65535")
+			return errors.New("Target ports must be between 1 and 65535.")
 		}
 	}
 	if m.BindIP == "" {
@@ -99,7 +99,7 @@ func (s *Server) validateMapping(c *orgCtx, m *model.Mapping) error {
 	}
 	m.BindIP = ip.String()
 	if m.Port < 1 || m.Port > 65535 {
-		return errors.New("public port must be 1-65535")
+		return errors.New("The public port must be between 1 and 65535.")
 	}
 	switch {
 	case m.PortEnd == 0 || m.PortEnd == m.Port:
@@ -107,7 +107,7 @@ func (s *Server) validateMapping(c *orgCtx, m *model.Mapping) error {
 	case m.PortEnd < m.Port:
 		return errors.New("the end of a port range can't be before its start")
 	case m.PortEnd > 65535:
-		return errors.New("public ports must be 1-65535")
+		return errors.New("Public ports must be between 1 and 65535.")
 	case m.Proto != model.ProtoTCP && m.Proto != model.ProtoUDP:
 		return errors.New("port ranges work for tcp and udp only")
 	case m.PortEnd-m.Port+1 > 1000:
@@ -193,7 +193,7 @@ func (s *Server) validateMapping(c *orgCtx, m *model.Mapping) error {
 		}
 	}
 	if m.HealthSeconds != 0 && m.HealthSeconds != -1 && (m.HealthSeconds < 5 || m.HealthSeconds > 3600) {
-		return errors.New("health check interval must be 5-3600 seconds, or off")
+		return errors.New("The health check interval must be 5 to 3600 seconds, or off.")
 	}
 
 	for _, o := range s.st.Mappings {
@@ -204,7 +204,7 @@ func (s *Server) validateMapping(c *orgCtx, m *model.Mapping) error {
 		if m.Proto == o.Proto && model.HostBased(m.Proto) && m.BindIP == o.BindIP && m.Hostname != o.Hostname {
 			continue // same listener, different hostname
 		}
-		return fmt.Errorf("%s port %s on %s is already used by %q", netClass(m.Proto), portLabel(*m), o.BindIP, o.Name)
+		return fmt.Errorf("%s port %s on %s is already used by %q. Choose another port or address.", strings.ToUpper(netClass(m.Proto)), portLabel(*m), o.BindIP, o.Name)
 	}
 	if m.Name == "" {
 		if m.Hostname != "" {
@@ -226,7 +226,7 @@ func portLabel(m model.Mapping) string {
 
 func checkPIN(p string) error {
 	if len(p) < 4 || len(p) > 12 {
-		return errors.New("a PIN is 4-12 digits")
+		return errors.New("A PIN is 4 to 12 digits.")
 	}
 	for _, c := range p {
 		if c < '0' || c > '9' {

orgs.go

@@ -349,7 +349,7 @@ func (s *Server) acceptInvite(w http.ResponseWriter, r *http.Request) {
 		return
 	}
 	if !s.allow("invite|"+clientIP(r), 20, 10*time.Minute) {
-		fail(w, 429, errors.New("too many attempts"))
+		fail(w, 429, errors.New("Too many attempts. Wait a few minutes and try again."))
 		return
 	}
 	h := sha(in.Token)

resauth.go

@@ -54,10 +54,10 @@ func (s *Server) protectedMapping(id string) *model.Mapping {
 func checkReturn(m *model.Mapping, raw string) (*url.URL, error) {
 	u, err := url.Parse(raw)
 	if err != nil || (u.Scheme != "http" && u.Scheme != "https") || u.Host == "" {
-		return nil, errors.New("invalid return address")
+		return nil, errors.New("This sign-in link is incomplete. Open the page you wanted again and you will be brought back here.")
 	}
 	if (m.Proto == model.ProtoHTTPS) != (u.Scheme == "https") {
-		return nil, errors.New("return address uses the wrong scheme")
+		return nil, errors.New("This sign-in link is not valid. Open the page you wanted again and you will be brought back here.")
 	}
 	host := u.Hostname()
 	port := u.Port()
@@ -68,7 +68,7 @@ func checkReturn(m *model.Mapping, raw string) (*url.URL, error) {
 		}
 	}
 	if !model.HostMatches(m.Hostname, strings.ToLower(host)) || port != fmt.Sprint(m.Port) {
-		return nil, errors.New("return address doesn't belong to this resource")
+		return nil, errors.New("This sign-in link points somewhere else. Open the page you wanted again and you will be brought back here.")
 	}
 	return u, nil
 }
@@ -108,7 +108,7 @@ func (s *Server) resourceInfo(w http.ResponseWriter, r *http.Request) {
 	defer s.mu.Unlock()
 	m := s.protectedMapping(r.PathValue("id"))
 	if m == nil {
-		fail(w, 404, errors.New("this resource doesn't need a login, or doesn't exist"))
+		fail(w, 404, errors.New("This page does not need a sign-in, or it no longer exists. Check the address, or ask the person who shared it."))
 		return
 	}
 	if _, err := checkReturn(m, r.URL.Query().Get("return")); err != nil {
@@ -141,7 +141,7 @@ func (s *Server) grant(w http.ResponseWriter, r *http.Request, m *model.Mapping,
 	}
 	s.mu.Unlock()
 	if key == "" {
-		fail(w, 500, errors.New("edge is not set up for logins"))
+		fail(w, 500, errors.New("This server is not set up for sign-ins yet. Ask the administrator to finish setting it up."))
 		return
 	}
 	tok := authtoken.Sign(key, authtoken.Token{Mapping: m.ID, Sub: sub, Kind: authtoken.KindCallback, Epoch: m.AuthEpoch, Exp: time.Now().Add(2 * time.Minute).Unix()})
@@ -158,7 +158,7 @@ func (s *Server) resourceAuth(method string, fn func(w http.ResponseWriter, r *h
 			return
 		}
 		if !s.allow("res|"+method+"|"+clientIP(r)+"|"+r.PathValue("id"), 12, 5*time.Minute) {
-			fail(w, 429, errors.New("too many attempts, wait a few minutes"))
+			fail(w, 429, errors.New("Too many attempts. Wait a few minutes and try again."))
 			return
 		}
 		s.mu.Lock()
@@ -169,7 +169,7 @@ func (s *Server) resourceAuth(method string, fn func(w http.ResponseWriter, r *h
 		}
 		s.mu.Unlock()
 		if pm == nil {
-			fail(w, 404, errors.New("no such resource"))
+			fail(w, 404, errors.New("That page does not exist. Check the address."))
 			return
 		}
 		back, err := checkReturn(&m, body["return"])
@@ -191,7 +191,7 @@ func (s *Server) resourcePassword(w http.ResponseWriter, r *http.Request, m *mod
 	}
 	if bcrypt.CompareHashAndPassword([]byte(hash), []byte(body["password"])) != nil || hash == string(dummyHash) {
 		time.Sleep(300 * time.Millisecond)
-		fail(w, 401, errors.New("wrong password"))
+		fail(w, 401, errors.New("That password is not right. Check it and try again."))
 		return
 	}
 	s.grant(w, r, m, back, "password")
@@ -207,7 +207,7 @@ func (s *Server) resourcePin(w http.ResponseWriter, r *http.Request, m *model.Ma
 	}
 	if bcrypt.CompareHashAndPassword([]byte(hash), []byte(body["pin"])) != nil || hash == string(dummyHash) {
 		time.Sleep(300 * time.Millisecond)
-		fail(w, 401, errors.New("wrong PIN"))
+		fail(w, 401, errors.New("That PIN is not right. Check it and try again."))
 		return
 	}
 	s.grant(w, r, m, back, "pin")
@@ -216,7 +216,7 @@ func (s *Server) resourcePin(w http.ResponseWriter, r *http.Request, m *model.Ma
 func (s *Server) resourceSSO(w http.ResponseWriter, r *http.Request, m *model.Mapping, back *url.URL, body map[string]string) {
 	p := s.principalFrom(r)
 	if p == nil || p.User.ID == "" || !m.Auth.SSO {
-		fail(w, 401, errors.New("sign in first"))
+		fail(w, 401, errors.New("Sign in first, then try again."))
 		return
 	}
 	s.mu.Lock()
@@ -224,7 +224,7 @@ func (s *Server) resourceSSO(w http.ResponseWriter, r *http.Request, m *model.Ma
 	allowed := u != nil && s.canAccess(u, m)
 	s.mu.Unlock()
 	if !allowed {
-		fail(w, 403, errors.New("your account doesn't have access to this resource"))
+		fail(w, 403, errors.New("Your account does not have access to this page. Ask the person who shared it to add you."))
 		return
 	}
 	s.grant(w, r, m, back, p.User.Email)
@@ -243,7 +243,7 @@ func mailAllowed(list []string, email string) bool {
 func (s *Server) resourceEmailStart(w http.ResponseWriter, r *http.Request, m *model.Mapping, back *url.URL, body map[string]string) {
 	email := strings.ToLower(strings.TrimSpace(body["email"]))
 	if !m.Auth.Email || !s.mailConfigured() {
-		fail(w, 400, errors.New("email codes are not available for this resource"))
+		fail(w, 400, errors.New("Email codes are not turned on for this page. Use another sign-in method."))
 		return
 	}
 	// always answer the same way so addresses can't be probed
@@ -279,7 +279,7 @@ func (s *Server) resourceEmailVerify(w http.ResponseWriter, r *http.Request, m *
 	}
 	s.mu.Unlock()
 	if !good || !mailAllowed(m.Auth.AllowedMails, email) {
-		fail(w, 401, errors.New("wrong or expired code"))
+		fail(w, 401, errors.New("That code is wrong or has expired. Request a new one and try again."))
 		return
 	}
 	s.grant(w, r, m, back, email)
@@ -303,7 +303,7 @@ func (s *Server) resourceShare(w http.ResponseWriter, r *http.Request, m *model.
 	}
 	s.mu.Unlock()
 	if !valid {
-		fail(w, 401, errors.New("this share link is invalid, expired or used up"))
+		fail(w, 401, errors.New("This share link is invalid, expired or already used up. Ask for a new one."))
 		return
 	}
 	if name == "" {

scripts/lint-design.mjs

@@ -0,0 +1,57 @@
+// Style gate for the dashboard, following the Lightwell design language (see docs/design.md).
+// Fails on em or en dashes, emoji, exclamation marks in interface copy, and raw colors outside the
+// token block of web/index.html. Run with: node scripts/lint-design.mjs
+import { readdirSync, readFileSync, statSync } from "node:fs";
+import { extname, join, relative, sep } from "node:path";
+
+const root = new URL("..", import.meta.url).pathname.replace(/^\/([A-Za-z]:)/, "$1");
+const targets = ["web", "docs", "README.md", "deploy", "scripts", "cmd", "."];
+const skipDirs = new Set(["node_modules", ".git", "e2e", "internal"]);
+const exts = new Set([".html", ".md", ".go", ".sh", ".mjs", ".example"]);
+
+const dash = /[–—−]/;
+const emoji = /[\u{1F300}-\u{1FAFF}\u{2600}-\u{27BF}\u{1F900}-\u{1F9FF}\u{FE0F}\u{2B50}\u{2705}\u{274C}]/u;
+const rawColor = /#[0-9a-fA-F]{3,8}\b|\brgba?\(|\bhsla?\(/;
+
+const seen = new Set();
+function* walk(p, top) {
+  const st = statSync(p, { throwIfNoEntry: false });
+  if (!st || seen.has(p)) return;
+  if (st.isFile()) { seen.add(p); return yield p; }
+  for (const name of readdirSync(p)) {
+    if (skipDirs.has(name) || (top && name.startsWith("."))) continue;
+    const full = join(p, name);
+    // the "." target only contributes the files at the top level
+    if (p === root && statSync(full).isDirectory()) continue;
+    yield* walk(full, false);
+  }
+}
+
+const problems = [];
+for (const t of targets) {
+  for (const file of walk(join(root, t), true)) {
+    if (!exts.has(extname(file)) && !file.endsWith(".env.example")) continue;
+    const rel = relative(root, file).split(sep).join("/");
+    if (rel.endsWith("go.sum") || rel === "scripts/lint-design.mjs") continue;
+    const isPage = rel.startsWith("web/") && rel.endsWith(".html");
+    let inTokens = false;
+    readFileSync(file, "utf8").split("\n").forEach((line, i) => {
+      const at = (msg) => problems.push(`${rel}:${i + 1}: ${msg}`);
+      if (line.includes("tokens:begin")) inTokens = true;
+      if (dash.test(line)) at("em dash, en dash or minus sign. Use a comma, colon, period or the word to.");
+      if (emoji.test(line)) at("emoji or pictographic symbol. Use an approved outline icon.");
+      if (isPage && !inTokens && rawColor.test(line.replace(/\/\*.*?\*\//g, "")) && !/placeholder|href="#|&#/.test(line)) {
+        at("raw color outside the token block. Use a token.");
+      }
+      if (isPage && /(?:toast|textContent\s*=|class:'(?:empty|notice)')[^;\n]*'[^']*[A-Za-z]![^']*'/.test(line)) at("exclamation mark in interface copy.");
+      if (line.includes("tokens:end")) inTokens = false;
+    });
+  }
+}
+
+if (problems.length) {
+  console.error(problems.join("\n"));
+  console.error(`\n${problems.length} style problem(s).`);
+  process.exit(1);
+}
+console.log("Style checks passed.");

server.go

@@ -99,7 +99,10 @@ func (s *Server) Handler() http.Handler {
 	mux.HandleFunc("POST /api/admin/settings/test-mail", s.withServerAdmin(s.testMail))
 	mux.HandleFunc("GET /api/admin/update", s.withServerAdmin(s.checkUpdate))
 	mux.HandleFunc("POST /api/admin/update/apply", s.withServerAdmin(s.applyUpdate))
+	mux.HandleFunc("GET /api/admin/update/status", s.withServerAdmin(s.updateStatus))
 	mux.HandleFunc("GET /api/versions", s.withUser(s.latestVersions))
+	mux.HandleFunc("GET /api/edges/{id}/update/log", s.withServerAdmin(s.edgeUpdateLog))
+	mux.HandleFunc("GET /api/orgs/{org}/sites/{id}/update/log", s.withOrg(true, s.siteUpdateLog))
 	mux.HandleFunc("POST /api/edges/{id}/update", s.withServerAdmin(s.updateEdge))
 	mux.HandleFunc("POST /api/orgs/{org}/sites/{id}/update", s.withOrg(true, s.updateSite))
 	mux.HandleFunc("GET /api/admin/audit", s.withServerAdmin(func(w http.ResponseWriter, r *http.Request, p *principal) {

settings.go

@@ -69,7 +69,7 @@ func (s *Server) smtpSend(to, subject, body string) error {
 	c := s.st.Settings.SMTP
 	s.mu.Unlock()
 	if c.Host == "" {
-		return errors.New("email is not configured (Settings -> Email)")
+		return errors.New("Email is not set up yet. Set it up under Server, Settings.")
 	}
 	if c.Port == 0 {
 		c.Port = 587

store.go

@@ -18,6 +18,8 @@ import (
 
 	"git.veillax.com/Veillax/hammerhead/internal/secretbox"
 	"git.veillax.com/Veillax/reef/model"
+	"unicode"
+	"unicode/utf8"
 )
 
 type Org struct {
@@ -209,6 +211,8 @@ type Server struct {
 	oidc    map[string]*oidcDoc
 
 	alerts   map[string]*alertState // active problems by key (see alerts.go)
+	updRuns  map[string]*updRun     // progress of updates running on edges and sites, by ID
+	selfUpd  selfUpdate             // progress of this server's own update
 	verMu    sync.Mutex             // guards verCache and verAt, the latest releases seen by /api/versions
 	verCache map[string]string
 	verAt    time.Time
@@ -253,6 +257,7 @@ func New(dir string, opts Options) (*Server, error) {
 		oidc:       map[string]*oidcDoc{},
 		alerts:     map[string]*alertState{},
 		mtaSent:    map[string]time.Time{},
+		updRuns:    map[string]*updRun{},
 	}
 	s.st.Sessions = map[string]*Session{}
 	s.st.Secrets = map[string]*Secret{}
@@ -282,6 +287,7 @@ func New(dir string, opts Options) (*Server, error) {
 	if opts.SelfDomain != "" && opts.SelfTunnel == "" {
 		s.opts.SelfTunnel = opts.SelfDomain + ":51820"
 	}
+	s.finishSelfUpdateLog()
 	if err := s.ensureSelfEdge(); err != nil {
 		db.Close()
 		return nil, err
@@ -429,8 +435,13 @@ func writeJSON(w http.ResponseWriter, code int, v any) {
 	json.NewEncoder(w).Encode(v)
 }
 
+// fail sends an error to the browser. Messages are shown to people, so they start with a capital letter.
 func fail(w http.ResponseWriter, code int, err error) {
-	writeJSON(w, code, map[string]string{"error": err.Error()})
+	msg := err.Error()
+	if r, n := utf8.DecodeRuneInString(msg); n > 0 {
+		msg = string(unicode.ToUpper(r)) + msg[n:]
+	}
+	writeJSON(w, code, map[string]string{"error": msg})
 }
 
 func failf(w http.ResponseWriter, code int, format string, a ...any) {

update.go

@@ -4,6 +4,7 @@ import (
 	"context"
 	"errors"
 	"net/http"
+	"os"
 	"strings"
 	"sync"
 	"time"
@@ -45,13 +46,32 @@ func (s *Server) applyUpdate(w http.ResponseWriter, r *http.Request, p *principa
 		fail(w, 400, errors.New("auto-update is off: set HAMMERHEAD_AUTO_UPDATE=1 and restart Hammerhead, or update it by hand"))
 		return
 	}
+	u := &s.selfUpd
+	u.mu.Lock()
+	if u.running {
+		u.mu.Unlock()
+		fail(w, 409, errors.New("an update is already running"))
+		return
+	}
+	u.running, u.stage, u.pct, u.lines = true, "starting", 0, nil
+	u.mu.Unlock()
+	os.WriteFile(s.updateLogPath(), nil, 0o600) // a new run starts a new log
 	cfg := s.updateConfig("hammerhead", s.opts.Version)
-	cfg.Restart = func(exe string) error { s.Close(); return selfupdate.Restart(exe) }
+	cfg.Progress = func(e selfupdate.Event) { s.selfNote(e.Stage, e.Pct, e.Line) }
+	cfg.Restart = func(exe string) error {
+		s.selfNote("restarting", 100, "Closing the database and restarting")
+		s.Close()
+		return selfupdate.Restart(exe)
+	}
+	s.selfNote("starting", 0, "Update requested by "+p.User.Email)
 	s.audit("", p.User.Email, "server.update", "")
 	go func() {
 		ctx, cancel := context.WithTimeout(context.Background(), 10*time.Minute)
 		defer cancel()
 		selfupdate.CheckOnce(ctx, cfg) // on success the process is replaced and this never returns
+		u.mu.Lock()
+		u.running = false
+		u.mu.Unlock()
 	}()
 	writeJSON(w, 200, map[string]any{"started": true})
 }
@@ -121,6 +141,7 @@ func (s *Server) updateEdge(w http.ResponseWriter, r *http.Request, p *principal
 		fail(w, 400, err)
 		return
 	}
+	delete(s.updRuns, e.ID) // a new request starts a new log
 	s.bump()
 	s.audit("", p.User.Email, "edge.update", e.Name)
 	ok(w)
@@ -142,6 +163,7 @@ func (s *Server) updateSite(w http.ResponseWriter, r *http.Request, c *orgCtx) {
 		fail(w, 400, err)
 		return
 	}
+	delete(s.updRuns, st.ID)
 	s.bump()
 	s.audit(c.Org.ID, c.Actor, "site.update", st.Name)
 	ok(w)

update_test.go

@@ -5,6 +5,9 @@ import (
 	"fmt"
 	"net/http"
 	"net/http/httptest"
+	"os"
+	"path/filepath"
+	"strings"
 	"testing"
 )
 
@@ -52,3 +55,36 @@ func TestCheckForUpdates(t *testing.T) {
 		t.Errorf("unreachable server: %d %s", code, b)
 	}
 }
+
+func TestSelfUpdateLogSurvivesTheRestartItEndsWith(t *testing.T) {
+	dir := t.TempDir()
+	if err := os.WriteFile(filepath.Join(dir, "update.log"), []byte("12:00:00 Checking\n12:00:09 Installed v0.3.0; restarting into it\n"), 0o600); err != nil {
+		t.Fatal(err)
+	}
+	s, err := New(dir, Options{AdminEmail: "admin@test.local", AdminPassword: "password123", MasterKey: key, Version: "v0.3.0"})
+	if err != nil {
+		t.Fatal(err)
+	}
+	defer s.Close()
+	do := apiClient(t, s)
+	code, b := do("GET", "/api/admin/update/status", nil)
+	var out struct {
+		Running bool
+		Stage   string
+		Pct     int
+		Lines   []string
+		Version string
+	}
+	json.Unmarshal(b, &out)
+	last := ""
+	if len(out.Lines) > 0 {
+		last = out.Lines[len(out.Lines)-1]
+	}
+	if code != 200 || out.Running || out.Stage != "done" || out.Pct != 100 || len(out.Lines) != 3 || !strings.Contains(last, "now running v0.3.0") {
+		t.Fatalf("status: %d %s", code, b)
+	}
+	// starting an update needs auto-update on
+	if code, b := do("POST", "/api/admin/update/apply", nil); code != 400 || !strings.Contains(string(b), "HAMMERHEAD_AUTO_UPDATE") {
+		t.Fatalf("apply without auto-update: %d %s", code, b)
+	}
+}

updatelog.go

@@ -0,0 +1,152 @@
+package hammerhead
+
+import (
+	"errors"
+	"net/http"
+	"os"
+	"path/filepath"
+	"strings"
+	"sync"
+	"time"
+)
+
+const maxUpdateLines = 200
+
+// updRun is the progress of one update an edge or site is carrying out, as that agent reported it.
+type updRun struct {
+	ID    string // the update request it belongs to
+	Stage string
+	Pct   int
+	Lines []string
+}
+
+// recordUpdateProgress keeps what an agent says about the update it is running. When the agent
+// reports a new version, the update is finished: its log gets a closing line and is then left alone,
+// so the freshly restarted program (which starts a new, empty log) can't overwrite it.
+// Caller holds s.mu.
+func (s *Server) recordUpdateProgress(agentID, reqID, stage string, pct int, lines []string, oldVersion, newVersion string) {
+	run := s.updRuns[agentID]
+	if run != nil && run.Stage != "done" && oldVersion != "" && newVersion != "" && newVersion != oldVersion {
+		run.Lines = append(run.Lines, time.Now().Format("15:04:05")+" Now running "+newVersion)
+		run.Stage, run.Pct = "done", 100
+		return
+	}
+	if reqID == "" || (stage == "" && len(lines) == 0) {
+		return
+	}
+	if run != nil && run.ID == reqID && run.Stage == "done" {
+		return
+	}
+	s.updRuns[agentID] = &updRun{ID: reqID, Stage: stage, Pct: pct, Lines: lines}
+}
+
+func (s *Server) updateLogView(agentID string, pending bool, msg, version string) map[string]any {
+	out := map[string]any{"running": pending, "msg": msg, "version": version, "stage": "", "pct": 0, "lines": []string{}}
+	if run := s.updRuns[agentID]; run != nil {
+		out["stage"], out["pct"], out["lines"] = run.Stage, run.Pct, run.Lines
+	}
+	return out
+}
+
+func (s *Server) edgeUpdateLog(w http.ResponseWriter, r *http.Request, p *principal) {
+	s.mu.Lock()
+	defer s.mu.Unlock()
+	e := s.findEdge(r.PathValue("id"))
+	if e == nil {
+		fail(w, 404, errors.New("no such edge"))
+		return
+	}
+	writeJSON(w, 200, s.updateLogView(e.ID, e.UpdateID != "", e.UpdateMsg, e.Version))
+}
+
+func (s *Server) siteUpdateLog(w http.ResponseWriter, r *http.Request, c *orgCtx) {
+	s.mu.Lock()
+	defer s.mu.Unlock()
+	st := s.findSite(r.PathValue("id"))
+	if st == nil || !s.siteVisible(c, st) {
+		fail(w, 404, errors.New("no such site"))
+		return
+	}
+	writeJSON(w, 200, s.updateLogView(st.ID, st.UpdateID != "", st.UpdateMsg, st.Version))
+}
+
+// selfUpdate is the progress of this server's own update. It is kept in memory and in <data>/update.log,
+// so the page can still show it after the restart that ends a successful update.
+type selfUpdate struct {
+	mu      sync.Mutex
+	running bool
+	stage   string
+	pct     int
+	lines   []string
+}
+
+func (s *Server) updateLogPath() string { return filepath.Join(s.dir, "update.log") }
+
+func (s *Server) selfNote(stage string, pct int, line string) {
+	u := &s.selfUpd
+	u.mu.Lock()
+	defer u.mu.Unlock()
+	if stage != "" {
+		u.stage = stage
+	}
+	if pct >= 0 {
+		u.pct = pct
+	}
+	if line == "" {
+		return
+	}
+	line = time.Now().Format("15:04:05") + " " + line
+	u.lines = append(u.lines, line)
+	if len(u.lines) > maxUpdateLines {
+		u.lines = u.lines[len(u.lines)-maxUpdateLines:]
+	}
+	if f, err := os.OpenFile(s.updateLogPath(), os.O_APPEND|os.O_CREATE|os.O_WRONLY, 0o600); err == nil {
+		f.WriteString(line + "\n")
+		f.Close()
+	}
+}
+
+func readLines(path string) []string {
+	b, err := os.ReadFile(path)
+	if err != nil {
+		return nil
+	}
+	lines := strings.Split(strings.TrimRight(string(b), "\n"), "\n")
+	if len(lines) == 1 && lines[0] == "" {
+		return nil
+	}
+	if len(lines) > maxUpdateLines {
+		lines = lines[len(lines)-maxUpdateLines:]
+	}
+	return lines
+}
+
+// finishSelfUpdateLog runs at startup: if the last run ended by restarting into this process, say so.
+func (s *Server) finishSelfUpdateLog() {
+	lines := readLines(s.updateLogPath())
+	if n := len(lines); n > 0 && strings.Contains(lines[n-1], "restarting") && s.opts.Version != "" {
+		if f, err := os.OpenFile(s.updateLogPath(), os.O_APPEND|os.O_WRONLY, 0o600); err == nil {
+			f.WriteString(time.Now().Format("15:04:05") + " Hammerhead restarted: now running " + s.opts.Version + "\n")
+			f.Close()
+		}
+	}
+}
+
+// updateStatus returns the progress and log of this server's own update, for the Settings page.
+func (s *Server) updateStatus(w http.ResponseWriter, r *http.Request, p *principal) {
+	u := &s.selfUpd
+	u.mu.Lock()
+	out := map[string]any{"running": u.running, "stage": u.stage, "pct": u.pct, "lines": append([]string(nil), u.lines...), "version": s.opts.Version}
+	u.mu.Unlock()
+	if lines, _ := out["lines"].([]string); len(lines) == 0 {
+		// nothing in memory: this is a fresh process, so show the last update's log from disk
+		if saved := readLines(s.updateLogPath()); len(saved) > 0 {
+			stage := "done"
+			if strings.Contains(saved[len(saved)-1], "Failed:") {
+				stage = "failed"
+			}
+			out["lines"], out["stage"], out["pct"] = saved, stage, 100
+		}
+	}
+	writeJSON(w, 200, out)
+}

web/resource.html

@@ -3,62 +3,81 @@
 <head>
 <meta charset="utf-8">
 <meta name="viewport" content="width=device-width, initial-scale=1">
+<meta name="color-scheme" content="light dark">
 <title>Sign in</title>
 <style>
-  /* Design tokens: the only place raw colors, spacing and sizes are defined (same system as Lightwell). */
+  /* tokens:begin  Design tokens, the Lightwell design language (docs/design.md). This is the only place raw colors and sizes are defined. */
   :root {
-    --accent:#0891b2; --accent-contrast:#fff;
-    --bg:#f7f8f9; --surface:#fff; --surface-2:#f0f2f4; --border:#e2e5e9; --border-strong:#c6ccd3;
-    --text:#16191d; --text-muted:#566069; --text-faint:#75808b;
-    --accent-text:color-mix(in srgb, var(--accent) 85%, #000);
-    --accent-soft:color-mix(in srgb, var(--accent) 10%, var(--surface));
-    --accent-hover:color-mix(in srgb, var(--accent) 86%, #000);
-    --focus:color-mix(in srgb, var(--accent) 65%, #fff);
-    --success:#1c6b3a; --success-bg:#e3f1e8; --warning:#85560a; --warning-bg:#f9eed6; --danger:#a3271e; --danger-bg:#f9e6e3;
-    --overlay:rgb(15 18 22 / .5); --shadow:0 8px 24px rgb(15 18 22 / .14);
+    --accent:#1f5c5c; --accent-contrast:#ffffff;
+    --bg:#f6f5f3; --surface:#ffffff; --surface-2:#efede9; --border:#e0ddd7; --border-strong:#c4c0b8;
+    --text:#1d1c1a; --text-muted:#5f5b54; --text-faint:#7a766e;
+    --accent-text:var(--accent);
+    --accent-soft:color-mix(in srgb, var(--accent) 9%, var(--surface));
+    --accent-hover:color-mix(in srgb, var(--accent) 88%, #000000);
+    --focus:color-mix(in srgb, var(--accent) 70%, #ffffff);
+    --success:#1c6b3a; --success-bg:#e3f1e8; --warning:#85560a; --warning-bg:#f9eed6; --danger:#a3271e; --danger-bg:#f9e6e3; --neutral-bg:#eceae6;
+    --overlay:rgb(20 19 17 / 0.55); --shadow:0 8px 24px rgb(20 19 17 / 0.14);
     --s1:4px; --s2:8px; --s3:12px; --s4:16px; --s5:24px; --s6:32px; --s7:48px; --s8:64px;
-    --radius:6px; --radius-lg:10px;
+    --radius:6px; --radius-lg:10px; --border-w:1px;
     --font:system-ui,-apple-system,"Segoe UI",Roboto,"Helvetica Neue",Arial,sans-serif;
     --font-mono:ui-monospace,"SF Mono",Menlo,Consolas,monospace;
-    --text-xs:12px; --text-sm:13px; --text-base:14px; --text-lg:16px; --text-xl:20px; --text-2xl:26px;
-    --control-h:36px; --sidebar-w:248px; --content-max:1180px; --ease:140ms ease;
+    --text-xs:12px; --text-sm:13px; --text-base:15px; --text-lg:18px; --text-xl:22px; --text-2xl:28px; --leading:1.5;
+    --sidebar-w:232px; --content-max:1120px; --touch:44px; --control-h:38px;
+    --z-sticky:20; --z-overlay:100; --z-toast:200; --ease:140ms ease;
     color-scheme:light;
   }
-  @media (prefers-color-scheme: dark) { :root {
-    --accent:#22b8d4; --accent-contrast:#04222a;
-    --bg:#0c0d0f; --surface:#141517; --surface-2:#1d1f22; --border:#2a2d31; --border-strong:#41454b;
-    --text:#eceef0; --text-muted:#aab1b9; --text-faint:#8a929b;
-    --accent-text:color-mix(in srgb, var(--accent) 80%, #fff); --accent-soft:color-mix(in srgb, var(--accent) 18%, var(--surface)); --accent-hover:color-mix(in srgb, var(--accent) 85%, #fff);
-    --success:#86d3a0; --success-bg:#16301f; --warning:#e8bd6b; --warning-bg:#33280f; --danger:#f19a92; --danger-bg:#3a1b18;
-    --overlay:rgb(0 0 0 / .65); --shadow:0 8px 24px rgb(0 0 0 / .5); color-scheme:dark;
+  @media (prefers-color-scheme: dark) { :root:not([data-theme="light"]) {
+    --bg:#131312; --surface:#1b1b19; --surface-2:#252523; --border:#33322e; --border-strong:#4a4943;
+    --text:#ecebe7; --text-muted:#adaaa2; --text-faint:#8f8c84;
+    --accent-text:color-mix(in srgb, var(--accent) 45%, #ffffff);
+    --accent-soft:color-mix(in srgb, var(--accent) 22%, var(--surface));
+    --accent-hover:color-mix(in srgb, var(--accent) 85%, #ffffff);
+    --success:#86d3a0; --success-bg:#17301f; --warning:#e8bd6b; --warning-bg:#33280f; --danger:#f19a92; --danger-bg:#3a1b18; --neutral-bg:#2b2a27;
+    --overlay:rgb(0 0 0 / 0.65); --shadow:0 8px 24px rgb(0 0 0 / 0.5); color-scheme:dark;
   } }
-  * { box-sizing:border-box; }
-  body { margin:0; background:var(--bg); color:var(--text); font:var(--text-base)/1.5 var(--font); display:grid; place-items:center; min-height:100vh; padding:var(--s4); -webkit-font-smoothing:antialiased; }
-  .card { background:var(--surface); border:1px solid var(--border); border-radius:var(--radius-lg); padding:var(--s5); width:100%; max-width:400px; }
-  h1 { font-size:var(--text-xl); font-weight:600; letter-spacing:-.01em; margin:0 0 var(--s1); }
-  .sub { color:var(--text-muted); margin:0 0 var(--s4); font-size:var(--text-sm); }
-  .sec { border-top:1px solid var(--border); padding-top:var(--s4); margin-top:var(--s4); display:flex; flex-direction:column; gap:var(--s2); }
+  :root[data-theme="dark"] {
+    --bg:#131312; --surface:#1b1b19; --surface-2:#252523; --border:#33322e; --border-strong:#4a4943;
+    --text:#ecebe7; --text-muted:#adaaa2; --text-faint:#8f8c84;
+    --accent-text:color-mix(in srgb, var(--accent) 45%, #ffffff);
+    --accent-soft:color-mix(in srgb, var(--accent) 22%, var(--surface));
+    --accent-hover:color-mix(in srgb, var(--accent) 85%, #ffffff);
+    --success:#86d3a0; --success-bg:#17301f; --warning:#e8bd6b; --warning-bg:#33280f; --danger:#f19a92; --danger-bg:#3a1b18; --neutral-bg:#2b2a27;
+    --overlay:rgb(0 0 0 / 0.65); --shadow:0 8px 24px rgb(0 0 0 / 0.5); color-scheme:dark;
+  }
+  /* tokens:end */
+
+  *, *::before, *::after { box-sizing:border-box; }
+  html { -webkit-text-size-adjust:100%; }
+  body { margin:0; background:var(--bg); color:var(--text); font:var(--text-base)/var(--leading) var(--font); display:grid; place-items:center; min-height:100vh; padding:var(--s4); -webkit-font-smoothing:antialiased; }
+  .card { background:var(--surface); border:var(--border-w) solid var(--border); border-radius:var(--radius-lg); padding:var(--s5); width:100%; max-width:440px; }
+  h1 { font-size:var(--text-xl); font-weight:600; letter-spacing:-.01em; line-height:1.25; margin:0 0 var(--s1); }
+  h2 { font-size:var(--text-base); font-weight:600; margin:0; }
+  .lead { color:var(--text-muted); margin:0 0 var(--s4); }
+  .sec { border-top:var(--border-w) solid var(--border); padding-top:var(--s4); margin-top:var(--s4); display:flex; flex-direction:column; gap:var(--s3); }
   .sec:first-of-type { border-top:0; padding-top:0; margin-top:0; }
-  h2 { font-size:var(--text-xs); text-transform:uppercase; letter-spacing:.06em; color:var(--text-faint); margin:0; font-weight:600; }
-  input { background:var(--surface); color:var(--text); border:1px solid var(--border-strong); border-radius:var(--radius); padding:var(--s2) var(--s3); min-height:var(--control-h); font:inherit; width:100%; }
+  label { display:flex; flex-direction:column; gap:var(--s1); font-size:var(--text-sm); font-weight:600; }
+  input { background:var(--surface); color:var(--text); border:var(--border-w) solid var(--border-strong); border-radius:var(--radius); padding:var(--s2) var(--s3); min-height:var(--control-h); font:inherit; font-weight:400; width:100%; }
   input:focus { outline:2px solid var(--focus); outline-offset:0; border-color:var(--accent); }
   :focus-visible { outline:2px solid var(--focus); outline-offset:2px; border-radius:var(--radius); }
-  button, a.btn { display:flex; align-items:center; justify-content:center; min-height:var(--control-h); padding:0 var(--s4); background:var(--accent); color:var(--accent-contrast); border:1px solid var(--accent); border-radius:var(--radius); font:inherit; font-weight:500; cursor:pointer; text-decoration:none; transition:background var(--ease); }
+  button, a.btn { display:flex; align-items:center; justify-content:center; min-height:var(--control-h); padding:0 var(--s4); background:var(--accent); color:var(--accent-contrast); border:var(--border-w) solid var(--accent); border-radius:var(--radius); font:inherit; font-weight:500; cursor:pointer; text-decoration:none; transition:background var(--ease), border-color var(--ease); }
   button:hover, a.btn:hover { background:var(--accent-hover); border-color:var(--accent-hover); }
-  button.ghost, a.ghost { background:var(--surface); border:1px solid var(--border-strong); color:var(--text); }
+  button.ghost, a.ghost { background:var(--surface); border-color:var(--border-strong); color:var(--text); }
   button.ghost:hover, a.ghost:hover { background:var(--surface-2); border-color:var(--border-strong); }
-  #err { color:var(--danger); min-height:18px; font-size:var(--text-sm); margin-top:var(--s3); }
-  .ok { color:var(--text-muted); font-size:var(--text-sm); }
+  #err { color:var(--danger); font-size:var(--text-sm); margin-top:var(--s3); }
+  #err:empty { display:none; }
+  .hint { color:var(--text-muted); font-size:var(--text-sm); margin:0; }
   [hidden] { display:none !important; }
+  @media (prefers-reduced-motion: reduce) { * { transition:none !important; } }
+  @media (pointer: coarse) { button, a.btn, input { min-height:var(--touch); } input { font-size:16px; } }
 </style>
 </head>
 <body>
-<div class="card">
+<main class="card">
   <h1 id="title">Sign in</h1>
-  <p class="sub" id="sub"></p>
+  <p class="lead" id="sub"></p>
   <div id="body"></div>
-  <div id="err"></div>
-</div>
+  <div id="err" role="alert"></div>
+</main>
 <script>
 const id = location.pathname.split('/')[3];
 const params = new URLSearchParams(location.search);
@@ -77,6 +96,9 @@ function h(tag, props, ...kids) {
   return el;
 }
 const err = m => $('#err').textContent = m || '';
+let n = 0;
+// a visible label above the control, as the design language requires
+const field = (label, input) => { input.id = input.id || 'f' + (++n); return h('label', {for:input.id}, label, input); };
 
 async function post(path, data) {
   err('');
@@ -95,54 +117,57 @@ async function finish(path, data) {
 function section(title, ...kids) { return h('div', {class:'sec'}, h('h2', {}, title), ...kids); }
 
 function passwordForm(kind, label, type) {
-  const i = h('input', {type, placeholder:label, autocomplete: kind === 'password' ? 'current-password' : 'off', inputmode: kind === 'pin' ? 'numeric' : null});
+  const i = h('input', {type, autocomplete: kind === 'password' ? 'current-password' : 'off', inputmode: kind === 'pin' ? 'numeric' : null});
   const go = () => finish(kind, { [kind]: i.value });
   i.addEventListener('keydown', e => e.key === 'Enter' && go());
-  return section(label, i, h('button', {onclick:go}, 'Continue'));
+  return h('div', {class:'sec'}, field(label, i), h('button', {onclick:go}, 'Continue'));
 }
 
 function emailForm() {
   const email = h('input', {type:'email', placeholder:'you@example.com', autocomplete:'email'});
-  const code = h('input', {placeholder:'6-digit code', inputmode:'numeric', hidden:true});
-  const msg = h('div', {class:'ok'});
+  const code = h('input', {inputmode:'numeric', autocomplete:'one-time-code'});
+  const codeField = field('6-digit code', code); codeField.hidden = true;
+  const msg = h('p', {class:'hint'});
   const go = h('button', {}, 'Email me a code');
   go.onclick = async () => {
     try {
-      if (code.hidden) {
+      if (codeField.hidden) {
         const j = await post(`/auth/r/${id}/email/start`, { email: email.value, return: ret });
-        msg.textContent = j.status; code.hidden = false; go.textContent = 'Verify code'; code.focus();
+        msg.textContent = j.status; codeField.hidden = false; go.textContent = 'Verify code'; code.focus();
       } else await finish('email/verify', { email: email.value, code: code.value });
     } catch (e) { err(e.message); }
   };
-  return section('Email code', email, code, msg, go);
+  return section('Email code', field('Email address', email), codeField, msg, go);
 }
 
 function ssoForm(info) {
   const kids = [];
   if (info.user) {
     if (info.user.allowed) {
-      kids.push(h('div', {class:'ok'}, `Signed in as ${info.user.email}`), h('button', {onclick:() => finish('sso', {})}, 'Continue'));
+      kids.push(h('p', {class:'hint'}, `Signed in as ${info.user.email}.`), h('button', {onclick:() => finish('sso', {})}, 'Continue'));
     } else {
-      kids.push(h('div', {class:'ok'}, `${info.user.email} doesn't have access to this resource.`));
+      kids.push(h('p', {class:'hint'}, `${info.user.email} does not have access to this resource. Ask the person who shared it to add you.`));
     }
     kids.push(h('button', {class:'ghost', onclick: async () => { await fetch('/api/logout', {method:'POST'}); location.reload(); }}, 'Use a different account'));
     return section('Account', ...kids);
   }
-  const email = h('input', {type:'email', placeholder:'Email', autocomplete:'username'});
-  const pw = h('input', {type:'password', placeholder:'Password', autocomplete:'current-password'});
-  const code = h('input', {placeholder:'Authenticator code', inputmode:'numeric', autocomplete:'one-time-code', hidden:true});
+  const email = h('input', {type:'email', autocomplete:'username'});
+  const pw = h('input', {type:'password', autocomplete:'current-password'});
+  const code = h('input', {inputmode:'numeric', autocomplete:'one-time-code'});
+  const emailField = field('Email address', email), pwField = field('Password', pw), codeField = field('Authenticator code', code);
+  codeField.hidden = true;
   let ticket = null;
   const go = async () => {
     try {
       let j;
       if (ticket) j = await post('/api/login/totp', { ticket, code: code.value });
       else j = await post('/api/login', { email: email.value, password: pw.value });
-      if (j.needTotp) { ticket = j.ticket; code.hidden = false; email.hidden = pw.hidden = true; code.focus(); return; }
+      if (j.needTotp) { ticket = j.ticket; codeField.hidden = false; emailField.hidden = pwField.hidden = true; code.focus(); return; }
       location.reload();
     } catch (e) { err(e.message); }
   };
   [email, pw, code].forEach(i => i.addEventListener('keydown', e => e.key === 'Enter' && go()));
-  kids.push(email, pw, code, h('button', {onclick:go}, 'Sign in'));
+  kids.push(emailField, pwField, codeField, h('button', {onclick:go}, 'Sign in'));
   for (const p of info.providers || []) {
     const back = `/auth/r/${id}?return=${encodeURIComponent(ret)}`;
     kids.push(h('a', {class:'btn ghost', href:`/auth/oidc/${p.id}/start?return=${encodeURIComponent(back)}`}, `Continue with ${p.name}`));
@@ -153,19 +178,20 @@ function ssoForm(info) {
 async function main() {
   // share links skip the form
   const share = params.get('share');
-  if (share) { $('#title').textContent = 'Checking link…'; return finish('share', { token: share }); }
+  if (share) { $('#title').textContent = 'Checking your link'; return finish('share', { token: share }); }
   try {
     const r = await fetch(`/auth/r/${id}/info?return=${encodeURIComponent(ret)}`);
     const info = await r.json();
     if (!r.ok) throw new Error(info.error);
     $('#title').textContent = info.name;
-    $('#sub').textContent = `${info.host} is protected. Sign in to continue.`;
+    document.title = 'Sign in to ' + info.name;
+    $('#sub').textContent = `Sign in to open ${info.host}.`;
     if (info.sso) body.append(ssoForm(info));
     if (info.password) body.append(passwordForm('password', 'Password', 'password'));
     if (info.pin) body.append(passwordForm('pin', 'PIN', 'password'));
     if (info.email) body.append(emailForm());
-    if (!body.children.length) err('No sign-in method is available.');
-  } catch (e) { $('#title').textContent = 'Unavailable'; err(e.message); }
+    if (!body.children.length) err('No sign-in method is set up for this page. Ask the person who shared it with you.');
+  } catch (e) { $('#title').textContent = 'This page is unavailable'; err(e.message); }
 }
 main();
 </script>