Add switches to keep announcements off a page or off post pages

Announcements showed on every public page. Now each page has a "Show
announcements on this page" checkbox (pages.show_notices, on by default)
that covers the page and its posts, and the Design tab's Content section
has "Show announcements on post pages" (theme.post_notices, on by default)
for bloggers who want notices only on listings, not while reading a post.

Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01Sd8UPWrvyYCLj97JexNw3A

11 files changed, 85 insertions, 35 deletions

diff --git a/AGENTS.md b/AGENTS.md
index 5ac922d..2953025 100644
--- a/AGENTS.md
+++ b/AGENTS.md
@@ -363,7 +363,13 @@ internal/web/         server.go (host router, middleware, render helpers)
   constraint, so a new style needs a migration), `enabled`
   and `sort_order`. `blogView` loads the enabled ones and `placeNotices`
   groups them by placement, moving ones for a side column that is not laid
-  out into the main column.
+  out into the main column. Two switches hide them: `pages.show_notices`
+  (`Page.ShowNotices`, the page form's "Show announcements on this page",
+  default on) covers the page and its posts, and `theme.post_notices`
+  (`PostNotices`, Design → Content, default on) covers every post page —
+  `renderPage`/`handleBlogPost` put `noNotices` (a typed empty map, so the
+  layout's `index` lookups still work) in `notices` instead. Tag, search
+  and 404 pages always show them.
   Rendered by the `notices` template in `layouts/blog.html` inside a
   `.notices` wrapper; CSS classes `notice notice-<style>` use translucent
   colours so they fit any theme, except `gizmo`: a box framed in the theme's
@@ -478,7 +484,7 @@ superadmin password to `admin`. Production refuses both.
   `-- +goose Up/Down` sections; they run automatically at startup. Never
   edit an applied migration. Blog chain so far: `00001_init`, `00002_language`,
   `00003_files`, `00004_tags`, `00005_search`, `00006_format`, `00007_post_image`,
-  `00008_page_outro`, `00009_gizmo_style`, `00010_font_kind`, `00011_post_hide_date`; control: `00001_init`, `00002_upload_limit`. Both chains were re-baselined at 00001 after
+  `00008_page_outro`, `00009_gizmo_style`, `00010_font_kind`, `00011_post_hide_date`, `00012_page_show_notices`; control: `00001_init`, `00002_upload_limit`. Both chains were re-baselined at 00001 after
   the move to per-blog databases; deployments from before it have
   `goose_db_version` rows 2–7 in the control DB that must be deleted once
   (README "Upgrading from a single database") or the next control migration
diff --git a/internal/db/migrations/blog/00012_page_show_notices.sql b/internal/db/migrations/blog/00012_page_show_notices.sql
new file mode 100644
index 0000000..da4ff3d
--- /dev/null
+++ b/internal/db/migrations/blog/00012_page_show_notices.sql
@@ -0,0 +1,7 @@
+-- +goose Up
+-- A per-page switch for the announcements: an "About" page can do without
+-- the notices the home page carries.
+ALTER TABLE pages ADD COLUMN show_notices boolean NOT NULL DEFAULT true;
+
+-- +goose Down
+ALTER TABLE pages DROP COLUMN show_notices;
diff --git a/internal/i18n/el.go b/internal/i18n/el.go
index f1be9d4..f52b529 100644
--- a/internal/i18n/el.go
+++ b/internal/i18n/el.go
@@ -109,6 +109,7 @@ var el = map[string]string{
 	"Image not added:":                        "Η εικόνα δεν προστέθηκε:",
 	"shown above the posts; optional":         "εμφανίζεται πάνω από τις δημοσιεύσεις· προαιρετικό",
 	"Show in menu":                            "Εμφάνιση στο μενού",
+	"Show announcements on this page":         "Εμφάνιση ανακοινώσεων σε αυτή τη σελίδα",
 	"Back to pages":                           "Πίσω στις σελίδες",
 	"Page deleted.":                           "Η σελίδα διαγράφηκε.",
 	"“%s” is now the home page.":              "Η «%s» είναι τώρα η αρχική σελίδα.",
@@ -128,7 +129,7 @@ var el = map[string]string{
 	"New announcement":  "Νέα ανακοίνωση",
 	"Edit announcement": "Επεξεργασία ανακοίνωσης",
 	"Announcement":      "Ανακοίνωση",
-	"Notices shown on every page and post of your blog — the next meeting, this month's book, a holiday closure. Hide one instead of deleting it if you will need it again.": "Ειδοποιήσεις που εμφανίζονται σε κάθε σελίδα και δημοσίευση του ιστολογίου — η επόμενη συνάντηση, το βιβλίο του μήνα, οι διακοπές. Αν θα την ξαναχρειαστείτε, κρύψτε την αντί να τη διαγράψετε.",
+	"Notices shown on every page and post of your blog — the next meeting, this month's book, a holiday closure. Hide one instead of deleting it if you will need it again. A page can opt out on its form, and the Design tab can keep them off post pages.": "Ειδοποιήσεις που εμφανίζονται σε κάθε σελίδα και δημοσίευση του ιστολογίου — η επόμενη συνάντηση, το βιβλίο του μήνα, οι διακοπές. Αν θα την ξαναχρειαστείτε, κρύψτε την αντί να τη διαγράψετε. Μια σελίδα μπορεί να τις εξαιρέσει από τη φόρμα της, και η καρτέλα Σχεδίαση μπορεί να τις κρατήσει εκτός των σελίδων δημοσιεύσεων.",
 	"Where":                         "Πού",
 	"Look":                          "Εμφάνιση",
 	"Position":                      "Θέση",
@@ -393,14 +394,16 @@ var el = map[string]string{
 	"Show tags with a # in front":    "Εμφάνιση των ετικετών με # μπροστά",
 	"Rule under titles":              "Γραμμή κάτω από τους τίτλους",
 	"The rule goes under page and post titles, in the link colour.": "Η γραμμή μπαίνει κάτω από τους τίτλους σελίδων και δημοσιεύσεων, στο χρώμα των συνδέσμων.",
-	"Double dots":        "Διπλές τελείες",
-	"Date format":        "Μορφή ημερομηνίας",
-	"Logo & site icon":   "Λογότυπο & εικονίδιο ιστολογίου",
-	"Logo size":          "Μέγεθος λογότυπου",
-	"Small (48 px tall)": "Μικρό (48 px ύψος)",
-	"Medium (80 px)":     "Μεσαίο (80 px)",
-	"Large (140 px)":     "Μεγάλο (140 px)",
-	"Favicon":            "Εικονίδιο (favicon)",
+	"Show announcements on post pages":                              "Εμφάνιση ανακοινώσεων στις σελίδες δημοσιεύσεων",
+	"each page has its own switch":                                  "κάθε σελίδα έχει τον δικό της διακόπτη",
+	"Double dots":                                                   "Διπλές τελείες",
+	"Date format":                                                   "Μορφή ημερομηνίας",
+	"Logo & site icon":                                              "Λογότυπο & εικονίδιο ιστολογίου",
+	"Logo size":                                                     "Μέγεθος λογότυπου",
+	"Small (48 px tall)":                                            "Μικρό (48 px ύψος)",
+	"Medium (80 px)":                                                "Μεσαίο (80 px)",
+	"Large (140 px)":                                                "Μεγάλο (140 px)",
+	"Favicon":                                                       "Εικονίδιο (favicon)",
 	"The small icon browsers show in the tab. A square PNG or ICO of 32–64 px works best; pick None for the Blogspace icon.": "Το μικρό εικονίδιο που δείχνουν οι φυλλομετρητές στην καρτέλα. Ένα τετράγωνο PNG ή ICO 32–64 px είναι ιδανικό· επιλέξτε Κανένα για το εικονίδιο του Blogspace.",
 	"Reset to defaults": "Επαναφορά προεπιλογών",
 	"Puts every colour, font and layout option back to how a new blog starts and forgets the chosen images and fonts (they stay in your library).": "Επαναφέρει κάθε χρώμα, γραμματοσειρά και επιλογή διάταξης όπως ξεκινά ένα νέο ιστολόγιο και ξεχνά τις επιλεγμένες εικόνες και γραμματοσειρές (μένουν στη συλλογή σας).",
diff --git a/internal/store/pages.go b/internal/store/pages.go
index 08af9fe..3fdc492 100644
--- a/internal/store/pages.go
+++ b/internal/store/pages.go
@@ -6,26 +6,27 @@ import (
 )
 
 type Page struct {
-	ID        int64
-	Slug      string
-	Title     string
-	IntroMD   string
-	IntroHTML string
-	OutroMD   string // shown after the posts
-	OutroHTML string
-	Format    string // FormatMarkdown | FormatHTML: how IntroMD and OutroMD are read
-	NavOrder  int
-	ShowInNav bool // derived: the page has a menu entry
-	IsHome    bool
-	CreatedAt time.Time
-	PostCount int // filled by ListPages only
+	ID          int64
+	Slug        string
+	Title       string
+	IntroMD     string
+	IntroHTML   string
+	OutroMD     string // shown after the posts
+	OutroHTML   string
+	Format      string // FormatMarkdown | FormatHTML: how IntroMD and OutroMD are read
+	NavOrder    int
+	ShowInNav   bool // derived: the page has a menu entry
+	ShowNotices bool // announcements are shown on this page (and its posts)
+	IsHome      bool
+	CreatedAt   time.Time
+	PostCount   int // filled by ListPages only
 }
 
-const pageCols = `id, slug, title, intro_md, intro_html, outro_md, outro_html, format, nav_order, EXISTS (SELECT 1 FROM menu_items m WHERE m.page_id=pages.id), is_home, created_at`
+const pageCols = `id, slug, title, intro_md, intro_html, outro_md, outro_html, format, nav_order, EXISTS (SELECT 1 FROM menu_items m WHERE m.page_id=pages.id), show_notices, is_home, created_at`
 
 func scanPage(row interface{ Scan(...any) error }) (*Page, error) {
 	var p Page
-	err := row.Scan(&p.ID, &p.Slug, &p.Title, &p.IntroMD, &p.IntroHTML, &p.OutroMD, &p.OutroHTML, &p.Format, &p.NavOrder, &p.ShowInNav, &p.IsHome, &p.CreatedAt)
+	err := row.Scan(&p.ID, &p.Slug, &p.Title, &p.IntroMD, &p.IntroHTML, &p.OutroMD, &p.OutroHTML, &p.Format, &p.NavOrder, &p.ShowInNav, &p.ShowNotices, &p.IsHome, &p.CreatedAt)
 	if err != nil {
 		return nil, wrap(err)
 	}
@@ -42,7 +43,7 @@ func (bs *BlogStore) ListPages(ctx context.Context) ([]Page, error) {
 	var out []Page
 	for rows.Next() {
 		var p Page
-		if err := rows.Scan(&p.ID, &p.Slug, &p.Title, &p.IntroMD, &p.IntroHTML, &p.OutroMD, &p.OutroHTML, &p.Format, &p.NavOrder, &p.ShowInNav, &p.IsHome, &p.CreatedAt, &p.PostCount); err != nil {
+		if err := rows.Scan(&p.ID, &p.Slug, &p.Title, &p.IntroMD, &p.IntroHTML, &p.OutroMD, &p.OutroHTML, &p.Format, &p.NavOrder, &p.ShowInNav, &p.ShowNotices, &p.IsHome, &p.CreatedAt, &p.PostCount); err != nil {
 			return nil, err
 		}
 		out = append(out, p)
@@ -70,9 +71,9 @@ func (bs *BlogStore) CreatePage(ctx context.Context, p *Page) (*Page, error) {
 		return nil, err
 	}
 	defer tx.Rollback(ctx)
-	created, err := scanPage(tx.QueryRow(ctx, `INSERT INTO pages (slug, title, intro_md, intro_html, outro_md, outro_html, format, nav_order)
-		VALUES ($1,$2,$3,$4,$5,$6,$7,(SELECT coalesce(max(nav_order),-1)+1 FROM pages)) RETURNING `+pageCols,
-		p.Slug, p.Title, p.IntroMD, p.IntroHTML, p.OutroMD, p.OutroHTML, formatOrMD(p.Format)))
+	created, err := scanPage(tx.QueryRow(ctx, `INSERT INTO pages (slug, title, intro_md, intro_html, outro_md, outro_html, format, show_notices, nav_order)
+		VALUES ($1,$2,$3,$4,$5,$6,$7,$8,(SELECT coalesce(max(nav_order),-1)+1 FROM pages)) RETURNING `+pageCols,
+		p.Slug, p.Title, p.IntroMD, p.IntroHTML, p.OutroMD, p.OutroHTML, formatOrMD(p.Format), p.ShowNotices))
 	if err != nil {
 		return nil, err
 	}
@@ -92,8 +93,8 @@ func (bs *BlogStore) UpdatePage(ctx context.Context, p *Page) error {
 		return err
 	}
 	defer tx.Rollback(ctx)
-	if _, err := tx.Exec(ctx, `UPDATE pages SET slug=$2, title=$3, intro_md=$4, intro_html=$5, outro_md=$6, outro_html=$7, format=$8 WHERE id=$1`,
-		p.ID, p.Slug, p.Title, p.IntroMD, p.IntroHTML, p.OutroMD, p.OutroHTML, formatOrMD(p.Format)); err != nil {
+	if _, err := tx.Exec(ctx, `UPDATE pages SET slug=$2, title=$3, intro_md=$4, intro_html=$5, outro_md=$6, outro_html=$7, format=$8, show_notices=$9 WHERE id=$1`,
+		p.ID, p.Slug, p.Title, p.IntroMD, p.IntroHTML, p.OutroMD, p.OutroHTML, formatOrMD(p.Format), p.ShowNotices); err != nil {
 		return wrap(err)
 	}
 	if p.ShowInNav {
diff --git a/internal/web/handlers_blog.go b/internal/web/handlers_blog.go
index c26adfa..c1afedb 100644
--- a/internal/web/handlers_blog.go
+++ b/internal/web/handlers_blog.go
@@ -63,6 +63,10 @@ func (s *Server) blogView(r *http.Request) (map[string]any, error) {
 	return v, nil
 }
 
+// noNotices stands in for the placed announcements on pages that hide them
+// (typed, so the layout's index lookups still work).
+var noNotices = map[string][]store.Section{}
+
 // pageNum reads the ?p= of a paginated listing (1 when absent or silly).
 func pageNum(r *http.Request) int {
 	n, _ := strconv.Atoi(r.URL.Query().Get("p"))
@@ -109,6 +113,9 @@ func (s *Server) renderPage(w http.ResponseWriter, r *http.Request, page *store.
 	last := (total + per - 1) / per
 	fillExcerpts(v["theme"].(Theme), posts)
 	v["page"], v["posts"], v["pageNum"], v["lastPage"] = page, posts, n, last
+	if !page.ShowNotices {
+		v["notices"] = noNotices
+	}
 	// The pager appends ?p=N to base: no trailing slash, which /{page} would not match.
 	v["base"] = "/" + page.Slug
 	if page.IsHome {
@@ -195,6 +202,11 @@ func (s *Server) handleBlogPost(w http.ResponseWriter, r *http.Request) {
 		return
 	}
 	v["page"], v["post"] = page, post
+	// A post shows the announcements only when its page does and the theme
+	// wants them on posts at all.
+	if !page.ShowNotices || !v["theme"].(Theme).PostNotices {
+		v["notices"] = noNotices
+	}
 	s.render(w, r, "blog/post.html", v)
 }
 
diff --git a/internal/web/handlers_pages.go b/internal/web/handlers_pages.go
index 8dc0f5f..b085b82 100644
--- a/internal/web/handlers_pages.go
+++ b/internal/web/handlers_pages.go
@@ -39,7 +39,7 @@ func (s *Server) loadPage(w http.ResponseWriter, r *http.Request) *store.Page {
 }
 
 func (s *Server) handlePageForm(w http.ResponseWriter, r *http.Request) {
-	p := &store.Page{ShowInNav: true}
+	p := &store.Page{ShowInNav: true, ShowNotices: true}
 	if r.PathValue("id") != "" {
 		if p = s.loadPage(w, r); p == nil {
 			return
@@ -62,6 +62,7 @@ func (s *Server) handlePageSave(w http.ResponseWriter, r *http.Request) {
 	p.OutroMD = strings.ReplaceAll(r.FormValue("outro"), "\r\n", "\n")
 	p.Format = pick(r.FormValue("format"), store.FormatMarkdown, store.FormatHTML)
 	p.ShowInNav = r.FormValue("show_in_nav") == "on"
+	p.ShowNotices = r.FormValue("show_notices") == "on"
 	autoSlug := p.Slug == ""
 	if autoSlug {
 		p.Slug = slug.Make(p.Title)
diff --git a/internal/web/templates/dashboard/design.html b/internal/web/templates/dashboard/design.html
index fea1b92..476e311 100644
--- a/internal/web/templates/dashboard/design.html
+++ b/internal/web/templates/dashboard/design.html
@@ -188,6 +188,7 @@
   <h3>{{t "Posts"}}</h3>
   <label class="check"><input type="checkbox" name="show_dates"{{if $t.ShowDates}} checked{{end}}> {{t "Show the date on posts"}}</label>
   <label class="check"><input type="checkbox" name="tag_hash"{{if $t.TagHash}} checked{{end}}> {{t "Show tags with a # in front"}} <span class="muted">(#garden)</span></label>
+  <label class="check"><input type="checkbox" name="post_notices"{{if $t.PostNotices}} checked{{end}}> {{t "Show announcements on post pages"}} <span class="muted">({{t "each page has its own switch"}})</span></label>
   <div class="row">
     <label>{{t "Rule under titles"}}<br><select name="title_rule">
       <option value="none"{{if eq $t.TitleRule "none"}} selected{{end}}>{{t "None"}}</option>
diff --git a/internal/web/templates/dashboard/page_form.html b/internal/web/templates/dashboard/page_form.html
index 18b0a86..4ee720b 100644
--- a/internal/web/templates/dashboard/page_form.html
+++ b/internal/web/templates/dashboard/page_form.html
@@ -12,6 +12,7 @@
     <label for="ed-outro">{{t "Closing text"}} <span class="muted">({{t "shown after the posts, in the same format; optional"}})</span></label>
     {{template "editor" (dict "name" "outro" "value" .Data.page.OutroMD "format" .Data.page.Format "formatof" "intro" "rows" 8 "tall" false "upload" (print "/b/" .Blog.Subdomain "/files/upload") "preview" (print "/b/" .Blog.Subdomain "/preview") "csrf" .CSRF)}}
     <label class="check"><input type="checkbox" name="show_in_nav"{{if .Data.page.ShowInNav}} checked{{end}}> {{t "Show in menu"}}</label>
+    <label class="check"><input type="checkbox" name="show_notices"{{if .Data.page.ShowNotices}} checked{{end}}> {{t "Show announcements on this page"}}</label>
     <p class="actionrow">
       <button type="submit">{{t "Save"}}</button>
       {{if .Data.page.ID}}<a class="btn secondary" href="{{.BlogURL}}{{if .Data.page.IsHome}}/{{else}}/{{.Data.page.Slug}}{{end}}" target="_blank">{{t "View page"}} &#8599;</a>{{end}}
diff --git a/internal/web/templates/dashboard/sections.html b/internal/web/templates/dashboard/sections.html
index 9f0e314..2767921 100644
--- a/internal/web/templates/dashboard/sections.html
+++ b/internal/web/templates/dashboard/sections.html
@@ -4,7 +4,7 @@
 <div class="pagehead">
   <h1>{{t "Announcements"}}</h1>
   <div class="actions"><a class="btn" href="{{$u}}/new">+ {{t "New announcement"}}</a></div>
-  <p class="lead muted">{{t "Notices shown on every page and post of your blog — the next meeting, this month's book, a holiday closure. Hide one instead of deleting it if you will need it again."}}</p>
+  <p class="lead muted">{{t "Notices shown on every page and post of your blog — the next meeting, this month's book, a holiday closure. Hide one instead of deleting it if you will need it again. A page can opt out on its form, and the Design tab can keep them off post pages."}}</p>
 </div>
 <div class="card">
 {{if .Data.sections}}
diff --git a/internal/web/theme.go b/internal/web/theme.go
index 676a01e..0437f51 100644
--- a/internal/web/theme.go
+++ b/internal/web/theme.go
@@ -55,6 +55,7 @@ type Theme struct {
 	PostImage    string `json:"post_image"`     // where the post page shows the featured image: top | bottom | list (listings only)
 	TitleRule    string `json:"title_rule"`     // none | line | dots | dots2 | stripes, drawn under page and post titles in the link colour
 	TagHash      bool   `json:"tag_hash"`       // tags are listed as #name
+	PostNotices  bool   `json:"post_notices"`   // announcements are shown on post pages too, not only on listings
 
 	FooterBg    string `json:"footer_bg"`
 	FooterColor string `json:"footer_color"`
@@ -108,7 +109,7 @@ func DefaultTheme() Theme {
 		Font: "sans", HeadingFont: "same", FontSize: "normal",
 		HeaderImageHeight: "medium", HeaderAlign: "left", HeaderBg: "#2f3a4a", HeaderText: "#ffffff", TitleSize: "normal", HeaderRule: "none",
 		NavAlign: "left", NavStyle: "normal", NavBg: "#ffffff", NavText: "#222222",
-		ShowDates: true, DateFormat: "long", PostsPerPage: postsPerPageChoices[0], ListStyle: "full", PostImage: "top", TitleRule: "none",
+		ShowDates: true, DateFormat: "long", PostsPerPage: postsPerPageChoices[0], ListStyle: "full", PostImage: "top", TitleRule: "none", PostNotices: true,
 		FooterBg: "#2f3a4a", FooterColor: "#d0d5dc", FooterAlign: "center",
 		LogoSize: "medium",
 		HeaderOn: true, LeftOn: true, RightOn: true, FooterOn: true, LeftWidth: 25, RightWidth: 25, PageAlign: "center",
@@ -269,6 +270,7 @@ func ThemeFromForm(cur Theme, f url.Values) Theme {
 	t.PostImage = get("post_image")
 	t.TitleRule = get("title_rule")
 	t.TagHash = on("tag_hash")
+	t.PostNotices = on("post_notices")
 	t.FooterBg = get("footer_bg")
 	t.FooterColor = get("footer_color")
 	t.FooterAlign = get("footer_align")
diff --git a/internal/web/web_test.go b/internal/web/web_test.go
index a7c189f..34ec057 100644
--- a/internal/web/web_test.go
+++ b/internal/web/web_test.go
@@ -138,6 +138,22 @@ func TestThemeNormalizeAndCSS(t *testing.T) {
 	}
 }
 
+// Announcements on post pages are on by default (the look blogs had before
+// the switch) and, like every checkbox, off when the box is unticked; stored
+// themes from before the option get the default too.
+func TestPostNotices(t *testing.T) {
+	if !DefaultTheme().PostNotices || !ParseTheme([]byte(`{"show_dates":false}`)).PostNotices {
+		t.Error("post notices should default to on")
+	}
+	th := ThemeFromForm(DefaultTheme(), url.Values{"post_notices": {"on"}})
+	if !th.PostNotices {
+		t.Errorf("ticked: %+v", th)
+	}
+	if th = ThemeFromForm(th, url.Values{"show_dates": {"on"}}); th.PostNotices {
+		t.Errorf("unticked: %+v", th)
+	}
+}
+
 // The rule under titles is a body class blog.css draws from, coloured by the
 // theme CSS; the tag hash is a plain flag the templates read.
 func TestTitleRuleAndTagHash(t *testing.T) {