add symbol overlay to see what symbols are

src/PortfolioData.zig

@@ -84,6 +84,7 @@ const HistoricalPeriod = zfin.valuation.HistoricalPeriod;
 const Candle = zfin.Candle;
 const Dividend = zfin.Dividend;
 const AccountMap = zfin.analysis.AccountMap;
+const ClassificationMap = zfin.classification.ClassificationMap;
 const DataService = zfin.DataService;
 
 // ── Public types ──────────────────────────────────────────────
@@ -206,6 +207,7 @@ pub const WorkerDelays = struct {
     candles_ms: usize = 0,
     dividends_ms: usize = 0,
     account_map_ms: usize = 0,
+    classification_map_ms: usize = 0,
 };
 
 // ── State ─────────────────────────────────────────────────────
@@ -286,6 +288,9 @@ dividends_data: ?std.StringHashMap([]const Dividend) = null,
 account_map_future: ?std.Io.Future(void) = null,
 account_map_data: ?AccountMap = null,
 
+classification_map_future: ?std.Io.Future(void) = null,
+classification_map_data: ?ClassificationMap = null,
+
 // ── Construction ──────────────────────────────────────────────
 
 pub fn init(opts: InitOptions) PortfolioData {
@@ -383,6 +388,35 @@ pub fn invalidateAccountMap(self: *PortfolioData) void {
     self.account_map_future = self.io.async(accountMapWorker, .{ self, @as(usize, 0) });
 }
 
+/// Per-symbol classification metadata loaded from `metadata.srf`.
+/// Blocks on the classification-map worker. Returns null when
+/// there's no portfolio loaded or `metadata.srf` doesn't exist /
+/// can't be parsed.
+///
+/// Used by analysis_tab, review_tab, and the App-level symbol
+/// overlay. Sharing a single PortfolioData-scoped copy avoids
+/// the duplicate-load problem the per-tab caches had.
+pub fn classificationMap(self: *PortfolioData) ?*const ClassificationMap {
+    self.awaitWorker(&self.classification_map_future);
+    if (self.classification_map_data) |*cm| return cm;
+    return null;
+}
+
+/// Drop the cached classification_map and re-spawn its worker so
+/// the next `classificationMap()` call re-reads `metadata.srf`
+/// from disk. Re-spawn uses delay 0 (refresh is user-initiated).
+///
+/// The classification_map's storage lives in the per-load arena;
+/// nulling the field is sufficient — the next `arena.reset()`
+/// reaps the bytes. We don't call `cm.deinit()` here because
+/// that would touch the arena and double-free at reset time.
+pub fn invalidateClassificationMap(self: *PortfolioData) void {
+    if (self.classification_map_future) |*f| _ = f.cancel(self.io);
+    self.classification_map_future = null;
+    self.classification_map_data = null;
+    self.classification_map_future = self.io.async(classificationMapWorker, .{ self, @as(usize, 0) });
+}
+
 /// Drain a worker future. Idempotent (Future.await is itself
 /// idempotent); safe to call every time.
 fn awaitWorker(self: *PortfolioData, fut: *?std.Io.Future(void)) void {
@@ -428,6 +462,7 @@ pub fn load(
     self.snapshots_data = null;
     self.dividends_data = null;
     self.account_map_data = null;
+    self.classification_map_data = null;
 
     // candles_data lives in candles_arena and survives across
     // reloads — kept entries are reused, only new symbols hit
@@ -600,6 +635,7 @@ pub fn load(
     self.snapshots_future = self.io.async(snapshotsWorker, .{ self, today, positions_arena, opts.delays.snapshots_ms });
     self.dividends_future = self.io.async(dividendsWorker, .{ self, opts.delays.dividends_ms });
     self.account_map_future = self.io.async(accountMapWorker, .{ self, opts.delays.account_map_ms });
+    self.classification_map_future = self.io.async(classificationMapWorker, .{ self, opts.delays.classification_map_ms });
 
     return .{
         .cached_count = load_all.cached_count,
@@ -661,6 +697,9 @@ pub fn cancelLoad(self: *PortfolioData) void {
     if (self.account_map_future) |*f| _ = f.cancel(self.io);
     self.account_map_future = null;
     self.account_map_data = null;
+    if (self.classification_map_future) |*f| _ = f.cancel(self.io);
+    self.classification_map_future = null;
+    self.classification_map_data = null;
 }
 
 // ── Internal: workers ────────────────────────────────────────
@@ -741,6 +780,21 @@ fn accountMapWorker(self: *PortfolioData, delay_ms: usize) void {
     self.account_map_data = self.svc.loadAccountMap(self.allocator(), ppath);
 }
 
+fn classificationMapWorker(self: *PortfolioData, delay_ms: usize) void {
+    self.io.sleep(.fromMilliseconds(@intCast(delay_ms)), .real) catch return;
+    const ppath = self.anchorPath() orelse return;
+    // Derive metadata.srf path: same directory as the portfolio
+    // anchor. Mirrors the per-tab loaders we're consolidating.
+    const dir_end = if (std.mem.lastIndexOfScalar(u8, ppath, std.fs.path.sep)) |idx| idx + 1 else 0;
+    const meta_path = std.fmt.allocPrint(self.arena.child_allocator, "{s}metadata.srf", .{ppath[0..dir_end]}) catch return;
+    defer self.arena.child_allocator.free(meta_path);
+
+    const file_data = std.Io.Dir.cwd().readFileAlloc(self.io, meta_path, self.arena.child_allocator, .limited(1024 * 1024)) catch return;
+    defer self.arena.child_allocator.free(file_data);
+
+    self.classification_map_data = zfin.classification.parseClassificationFile(self.allocator(), file_data) catch null;
+}
+
 fn dupePositions(arena: Allocator, src: []const zfin.Position) []const zfin.Position {
     const dup = arena.alloc(zfin.Position, src.len) catch return &.{};
     @memcpy(dup, src);
@@ -830,6 +884,8 @@ test "PortfolioData.cancelLoad: idempotent on idle state" {
     try testing.expect(pd.snapshots_data == null);
     try testing.expect(pd.account_map_future == null);
     try testing.expect(pd.account_map_data == null);
+    try testing.expect(pd.classification_map_future == null);
+    try testing.expect(pd.classification_map_data == null);
 }
 
 test "PortfolioData.candles: returns null after cancelLoad with no data" {
@@ -849,6 +905,7 @@ test "PortfolioData.candles: returns null after cancelLoad with no data" {
     try testing.expect(pd.dividends() == null);
     try testing.expect(pd.snapshots() == null);
     try testing.expect(pd.accountMap() == null);
+    try testing.expect(pd.classificationMap() == null);
 }
 
 test "PortfolioData.load: NoPaths error on empty paths slice" {
@@ -979,6 +1036,7 @@ test "PortfolioData.WorkerDelays: defaults are all zero" {
     try testing.expectEqual(@as(usize, 0), d.candles_ms);
     try testing.expectEqual(@as(usize, 0), d.dividends_ms);
     try testing.expectEqual(@as(usize, 0), d.account_map_ms);
+    try testing.expectEqual(@as(usize, 0), d.classification_map_ms);
 }
 
 // ── Persistent candle cache tests ────────────────────────────

src/tui.zig

@@ -2,6 +2,7 @@ const std = @import("std");
 const vaxis = @import("vaxis");
 const zfin = @import("root.zig");
 const fmt = @import("format.zig");
+const Money = @import("Money.zig");
 const cli = @import("commands/common.zig");
 const portfolio_loader = @import("portfolio_loader.zig");
 const stderr = @import("stderr.zig");
@@ -463,6 +464,13 @@ pub const App = struct {
     // is unobservable.
     symbol_buf: [16]u8 = undefined,
     symbol_owned: bool = false,
+    /// Symbol the overlay popup is currently showing details for.
+    /// Empty when the overlay is closed. Bytes live in
+    /// `overlay_symbol_buf`. Set/cleared via `toggleOverlay`.
+    overlay_symbol: []const u8 = "",
+    // SAFETY: paired with `overlay_symbol`; only the prefix
+    // overlay_symbol_buf[0..overlay_symbol.len] is observable.
+    overlay_symbol_buf: [16]u8 = undefined,
     scroll_offset: usize = 0,
     visible_height: u16 = 24, // updated each draw
     /// Monotonic counter incremented each draw frame. Passed to the
@@ -1150,6 +1158,28 @@ pub const App = struct {
         self.resetSymbolData();
     }
 
+    /// Open / close / re-target the symbol-info overlay. Behavior:
+    ///   - overlay closed                         → open with `sym`.
+    ///   - overlay open, same `sym` as cursor     → close.
+    ///   - overlay open, different `sym`          → re-target to `sym`.
+    ///
+    /// `sym` is empty (no cursor on a symbol-bearing row) → close
+    /// the overlay if open, no-op if closed.
+    pub fn toggleOverlay(self: *App, sym: []const u8) void {
+        if (sym.len == 0) {
+            self.overlay_symbol = "";
+            return;
+        }
+        if (self.overlay_symbol.len > 0 and std.ascii.eqlIgnoreCase(self.overlay_symbol, sym)) {
+            self.overlay_symbol = "";
+            return;
+        }
+        const len = @min(sym.len, self.overlay_symbol_buf.len);
+        @memcpy(self.overlay_symbol_buf[0..len], sym[0..len]);
+        for (self.overlay_symbol_buf[0..len]) |*c| c.* = std.ascii.toUpper(c.*);
+        self.overlay_symbol = self.overlay_symbol_buf[0..len];
+    }
+
     fn resetSymbolData(self: *App) void {
         // Tab-private symbol-bound state is dropped via each tab's
         // onSymbolChange hook (where defined). Distinct from
@@ -1367,6 +1397,29 @@ pub const App = struct {
         const status_surface = try self.drawStatusBar(ctx, max_size.width);
         try children.append(ctx.arena, .{ .origin = .{ .row = @intCast(max_size.height - 1), .col = 0 }, .surface = status_surface });
 
+        // Symbol overlay (`K` key). Anchored to the bottom-right
+        // of the content area with z_index=1 so the vaxis
+        // compositor renders it on top of the tab content. Width
+        // and height auto-fit; we clamp the origin so it always
+        // stays inside the viewport even on narrow terminals.
+        if (self.overlay_symbol.len > 0) {
+            if (try self.drawSymbolOverlay(ctx, max_size.width, content_height)) |ov| {
+                const row: u16 = if (ov.size.height + 1 < max_size.height - 1)
+                    @intCast(max_size.height - 1 - ov.size.height)
+                else
+                    1;
+                const col: u16 = if (ov.size.width < max_size.width)
+                    @intCast(max_size.width - ov.size.width)
+                else
+                    0;
+                try children.append(ctx.arena, .{
+                    .origin = .{ .row = row, .col = col },
+                    .surface = ov,
+                    .z_index = 1,
+                });
+            }
+        }
+
         return .{ .size = max_size, .widget = self.widget(), .buffer = &.{}, .children = try children.toOwnedSlice(ctx.arena) };
     }
 
@@ -1552,6 +1605,192 @@ pub const App = struct {
         }
     }
 
+    /// Build the symbol-info overlay surface. Returns null when
+    /// nothing useful can be rendered (no portfolio loaded).
+    /// Anchored bottom-right by the caller via SubSurface origin.
+    ///
+    /// Width is fixed at a comfortable column count (or whatever
+    /// fits if the terminal is narrower); height auto-sizes to
+    /// the line count. The compositor draws it on top of the
+    /// content area via z_index=1.
+    fn drawSymbolOverlay(
+        self: *App,
+        ctx: vaxis.vxfw.DrawContext,
+        max_width: u16,
+        max_height: u16,
+    ) !?vaxis.vxfw.Surface {
+        const lines = try self.buildOverlayLines(ctx.arena);
+        if (lines.len == 0) return null;
+
+        // Width: longest line + 4 for borders + a comfortable cap
+        // so the box doesn't dominate wide terminals.
+        const overlay_width_cap: usize = 60;
+        var content_w: usize = 0;
+        for (lines) |ln| {
+            // Approximate display width by byte length. ASCII-only
+            // for the v1 content; emoji/multibyte would need a
+            // fancier measurement.
+            if (ln.text.len > content_w) content_w = ln.text.len;
+        }
+        content_w = @min(content_w, overlay_width_cap);
+        const total_w: u16 = @intCast(@min(content_w + 4, max_width));
+        const total_h: u16 = @intCast(@min(lines.len + 2, max_height));
+        if (total_w < 4 or total_h < 3) return null;
+
+        const buf = try ctx.arena.alloc(vaxis.Cell, @as(usize, total_w) * @as(usize, total_h));
+        const th = self.theme;
+        const box_style = th.contentStyle();
+        // Fill with spaces in box_style (overwrites whatever was
+        // beneath; opaque overlay).
+        for (buf) |*c| c.* = .{ .char = .{ .grapheme = " " }, .style = box_style };
+
+        // Border. Top + bottom rows + first/last column.
+        const tl = "┌";
+        const tr = "┐";
+        const bl = "└";
+        const br = "┘";
+        const h_border = "─";
+        const v_border = "│";
+        // Top
+        buf[0] = .{ .char = .{ .grapheme = tl }, .style = box_style };
+        buf[total_w - 1] = .{ .char = .{ .grapheme = tr }, .style = box_style };
+        for (1..total_w - 1) |c| buf[c] = .{ .char = .{ .grapheme = h_border }, .style = box_style };
+        // Bottom
+        const last_row = (@as(usize, total_h) - 1) * @as(usize, total_w);
+        buf[last_row] = .{ .char = .{ .grapheme = bl }, .style = box_style };
+        buf[last_row + total_w - 1] = .{ .char = .{ .grapheme = br }, .style = box_style };
+        for (1..total_w - 1) |c| buf[last_row + c] = .{ .char = .{ .grapheme = h_border }, .style = box_style };
+        // Left + right verticals
+        for (1..total_h - 1) |r| {
+            buf[r * total_w] = .{ .char = .{ .grapheme = v_border }, .style = box_style };
+            buf[r * total_w + total_w - 1] = .{ .char = .{ .grapheme = v_border }, .style = box_style };
+        }
+
+        // Content rows: render each StyledLine starting at col 2,
+        // row 1+i, capped at content_w bytes.
+        const inner_w: usize = @as(usize, total_w) - 4;
+        for (lines, 0..) |line, i| {
+            const row = 1 + i;
+            if (row >= total_h - 1) break;
+            const row_off = row * @as(usize, total_w) + 2;
+            // Reset interior cells to the line's style.
+            for (0..inner_w) |c| {
+                buf[row_off + c] = .{ .char = .{ .grapheme = " " }, .style = line.style };
+            }
+            // Write text bytes (ASCII assumption; if a name has
+            // multibyte characters we'd need fancier handling but
+            // in practice security names are ASCII).
+            const limit = @min(line.text.len, inner_w);
+            for (0..limit) |c| {
+                buf[row_off + c] = .{
+                    .char = .{ .grapheme = glyph(line.text[c]) },
+                    .style = line.style,
+                };
+            }
+        }
+
+        return .{
+            .size = .{ .width = total_w, .height = total_h },
+            .widget = self.widget(),
+            .buffer = buf,
+            .children = &.{},
+        };
+    }
+
+    /// Build the overlay's content lines for the currently-active
+    /// `overlay_symbol`. Pulls name + classification from
+    /// `pd.classificationMap()`; pulls allocation data (shares,
+    /// price, market value, weight) from `pd.summary`.
+    fn buildOverlayLines(self: *App, arena: std.mem.Allocator) ![]const StyledLine {
+        var lines: std.ArrayList(StyledLine) = .empty;
+        const th = self.theme;
+        const sym = self.overlay_symbol;
+
+        // Header: symbol (and name if available).
+        const cm_opt = self.portfolio.classificationMap();
+        const ce_opt: ?*const zfin.classification.ClassificationEntry = blk: {
+            if (cm_opt) |cm| {
+                for (cm.entries) |*e| {
+                    if (std.mem.eql(u8, e.symbol, sym)) break :blk e;
+                }
+            }
+            break :blk null;
+        };
+
+        const display_name: []const u8 = if (ce_opt) |ce| (ce.name orelse sym) else sym;
+        try lines.append(arena, .{
+            .text = try std.fmt.allocPrint(arena, " {s}", .{sym}),
+            .style = th.headerStyle(),
+        });
+        if (display_name.ptr != sym.ptr and display_name.len > 0) {
+            try lines.append(arena, .{
+                .text = try std.fmt.allocPrint(arena, " {s}", .{display_name}),
+                .style = th.contentStyle(),
+            });
+        }
+        try lines.append(arena, .{ .text = "", .style = th.contentStyle() });
+
+        // Classification rows.
+        if (ce_opt) |ce| {
+            if (ce.asset_class) |ac| {
+                try lines.append(arena, .{
+                    .text = try std.fmt.allocPrint(arena, " Asset class: {s}", .{ac}),
+                    .style = th.contentStyle(),
+                });
+            }
+            if (ce.sector) |s| {
+                try lines.append(arena, .{
+                    .text = try std.fmt.allocPrint(arena, " Sector:      {s}", .{s}),
+                    .style = th.contentStyle(),
+                });
+            }
+            if (ce.geo) |g| {
+                try lines.append(arena, .{
+                    .text = try std.fmt.allocPrint(arena, " Geo:         {s}", .{g}),
+                    .style = th.contentStyle(),
+                });
+            }
+        } else {
+            try lines.append(arena, .{
+                .text = " (no metadata.srf entry)",
+                .style = th.mutedStyle(),
+            });
+        }
+
+        // Allocation row from pd.summary.
+        if (self.portfolio.summary) |summary| {
+            for (summary.allocations) |a| {
+                if (!std.mem.eql(u8, a.symbol, sym)) continue;
+                try lines.append(arena, .{ .text = "", .style = th.contentStyle() });
+                try lines.append(arena, .{
+                    .text = try std.fmt.allocPrint(arena, " Shares:  {d:.4}", .{a.shares}),
+                    .style = th.contentStyle(),
+                });
+                try lines.append(arena, .{
+                    .text = try std.fmt.allocPrint(arena, " Price:   {f}", .{Money.from(a.current_price)}),
+                    .style = th.contentStyle(),
+                });
+                try lines.append(arena, .{
+                    .text = try std.fmt.allocPrint(arena, " Value:   {f}", .{Money.from(a.market_value)}),
+                    .style = th.contentStyle(),
+                });
+                try lines.append(arena, .{
+                    .text = try std.fmt.allocPrint(arena, " Weight:  {d:.2}%", .{a.weight * 100.0}),
+                    .style = th.contentStyle(),
+                });
+                break;
+            }
+        }
+
+        try lines.append(arena, .{ .text = "", .style = th.contentStyle() });
+        try lines.append(arena, .{
+            .text = " K to close",
+            .style = th.mutedStyle(),
+        });
+
+        return lines.toOwnedSlice(arena);
+    }
+
     fn drawStatusBar(self: *App, ctx: vaxis.vxfw.DrawContext, width: u16) !vaxis.vxfw.Surface {
         const t = self.theme;
         const buf = try ctx.arena.alloc(vaxis.Cell, width);
@@ -2461,3 +2700,66 @@ test "renderBrailleToStyledLines: full price label renders for portfolios over $
     try testing.expect(std.mem.indexOf(u8, rendered.items, ".89") != null);
     try testing.expect(std.mem.indexOf(u8, rendered.items, ",") != null);
 }
+
+// ── overlay state transitions ─────────────────────────────────
+//
+// The `toggleOverlay` semantics:
+//   - empty `sym` argument         → close overlay (no-op when closed).
+//   - overlay closed, non-empty    → open with sym.
+//   - overlay open, same sym       → close.
+//   - overlay open, different sym  → re-target to sym.
+//
+// We test it by manipulating App fields directly. App.toggleOverlay
+// only reads/writes `overlay_symbol` and `overlay_symbol_buf`, so
+// we don't need a fully-wired App.
+
+test "toggleOverlay: opens when closed and sym is non-empty" {
+    var app: App = undefined;
+    app.overlay_symbol = "";
+    app.toggleOverlay("VTI");
+    try testing.expectEqualStrings("VTI", app.overlay_symbol);
+}
+
+test "toggleOverlay: closes when same sym is passed twice" {
+    var app: App = undefined;
+    app.overlay_symbol = "";
+    app.toggleOverlay("VTI");
+    app.toggleOverlay("VTI");
+    try testing.expectEqualStrings("", app.overlay_symbol);
+}
+
+test "toggleOverlay: re-targets when sym differs" {
+    var app: App = undefined;
+    app.overlay_symbol = "";
+    app.toggleOverlay("VTI");
+    app.toggleOverlay("BND");
+    try testing.expectEqualStrings("BND", app.overlay_symbol);
+}
+
+test "toggleOverlay: empty sym closes overlay if open, no-op when closed" {
+    var app: App = undefined;
+    app.overlay_symbol = "";
+    app.toggleOverlay("");
+    try testing.expectEqualStrings("", app.overlay_symbol);
+
+    app.toggleOverlay("VTI");
+    app.toggleOverlay("");
+    try testing.expectEqualStrings("", app.overlay_symbol);
+}
+
+test "toggleOverlay: uppercases the stored symbol" {
+    var app: App = undefined;
+    app.overlay_symbol = "";
+    app.toggleOverlay("vti");
+    try testing.expectEqualStrings("VTI", app.overlay_symbol);
+}
+
+test "toggleOverlay: same-sym match is case-insensitive" {
+    var app: App = undefined;
+    app.overlay_symbol = "";
+    app.toggleOverlay("VTI");
+    // Lowercase "vti" should match the stored "VTI" and close,
+    // not re-target (which would be a needless redraw).
+    app.toggleOverlay("vti");
+    try testing.expectEqualStrings("", app.overlay_symbol);
+}

src/tui/analysis_tab.zig

@@ -28,11 +28,6 @@ pub const State = struct {
     /// Computed analysis output. Owned by State; freed in
     /// `deinit` and `reload`.
     result: ?zfin.analysis.AnalysisResult = null,
-    /// Per-portfolio classification metadata (`metadata.srf`).
-    /// Used only by analysis today; lives here because no other
-    /// tab consumes it. Loaded lazily on first activation; freed
-    /// in `deinit`.
-    classification_map: ?zfin.classification.ClassificationMap = null,
     /// Sector display granularity. Cycled via `cycle_sector_granularity`
     /// action. Default `mid` matches the CLI default
     /// (`zfin analysis` without `--sector-detail`).
@@ -65,7 +60,6 @@ pub const tab = struct {
 
     pub fn deinit(state: *State, app: *App) void {
         if (state.result) |*ar| ar.deinit(app.allocator);
-        if (state.classification_map) |*cm| cm.deinit();
         state.* = .{};
     }
 
@@ -78,19 +72,16 @@ pub const tab = struct {
     pub const deactivate = framework.noopDeactivate(State);
 
     /// Force re-fetch on user request. Frees the analysis result
-    /// AND the shared `account_map` on App (analysis's refresh
-    /// also re-reads accounts.srf). The classification_map persists
-    /// — it's per-portfolio, not per-symbol or per-refresh.
+    /// and invalidates the shared `account_map` + `classification_map`
+    /// on PortfolioData so the next load re-reads `accounts.srf`
+    /// and `metadata.srf` from disk (the user may have edited
+    /// either).
     pub fn reload(state: *State, app: *App) !void {
         if (state.result) |*ar| ar.deinit(app.allocator);
         state.result = null;
         state.loaded = false;
-        // Refresh-analysis intentionally drops the shared account
-        // map so the next load re-reads `accounts.srf` from disk
-        // (the user may have edited it). PortfolioData re-spawns
-        // the account_map worker with delay=0 so the next
-        // accountMap() call resolves quickly.
         app.portfolio.invalidateAccountMap();
+        app.portfolio.invalidateClassificationMap();
         loadData(state, app);
     }
 
@@ -126,18 +117,18 @@ pub const tab = struct {
     /// memory (allocations/symbols), so we have to invalidate
     /// it before the underlying data is freed.
     ///
-    /// Also drops `classification_map` because the user may
-    /// have re-enriched alongside their portfolio edits.
-    /// `account_map` lives on App (shared with portfolio_tab)
-    /// and is reset by PortfolioData itself.
+    /// `classification_map` and `account_map` live on
+    /// PortfolioData and are reset by pd's own load path —
+    /// nothing to free here for those.
     ///
     /// Eagerly recomputes only if this tab is currently active —
     /// otherwise next `activate` will lazy-load.
     pub fn onPortfolioReload(state: *State, app: *App) void {
         if (state.result) |*ar| ar.deinit(app.allocator);
         state.result = null;
-        if (state.classification_map) |*cm| cm.deinit();
-        state.classification_map = null;
+        // classification_map lives on PortfolioData now; the
+        // reload's broadcast already invalidated it via pd's own
+        // reset path. Nothing to free here.
         state.loaded = false;
         if (app.active_tab == .analysis) {
             tab.activate(state, app) catch |err| std.log.debug("analysis activate failed: {t}", .{err});
@@ -156,33 +147,14 @@ fn loadData(state: *State, app: *App) void {
     const pf = app.portfolio.file orelse return;
     const summary_ptr = if (app.portfolio.summary) |*s| s else return;
 
-    // Load classification metadata file
-    if (state.classification_map == null) {
-        // Look for metadata.srf next to the portfolio file
-        if (app.anchorPath()) |ppath| {
-            // Derive metadata path: same directory as portfolio, named "metadata.srf"
-            const dir_end = if (std.mem.lastIndexOfScalar(u8, ppath, std.fs.path.sep)) |idx| idx + 1 else 0;
-            const meta_path = std.fmt.allocPrint(app.allocator, "{s}metadata.srf", .{ppath[0..dir_end]}) catch return;
-            defer app.allocator.free(meta_path);
-
-            const file_data = std.Io.Dir.cwd().readFileAlloc(app.io, meta_path, app.allocator, .limited(1024 * 1024)) catch {
-                app.setStatus("No metadata.srf found. Run: zfin enrich <portfolio.srf> > metadata.srf");
-                return;
-            };
-            defer app.allocator.free(file_data);
-
-            state.classification_map = zfin.classification.parseClassificationFile(app.allocator, file_data) catch {
-                app.setStatus("Error parsing metadata.srf");
-                return;
-            };
-        }
-    }
-
     loadDataFinish(state, app, pf, summary_ptr.*);
 }
 
 fn loadDataFinish(state: *State, app: *App, pf: zfin.Portfolio, summary: zfin.valuation.PortfolioSummary) void {
-    const cm = state.classification_map orelse {
+    // classificationMap() blocks on the classification-map
+    // worker; first call may briefly wait while metadata.srf
+    // parses. Returns null when metadata.srf is missing.
+    const cm_ptr = app.portfolio.classificationMap() orelse {
         app.setStatus("No classification data. Run: zfin enrich <portfolio.srf> > metadata.srf");
         return;
     };
@@ -197,7 +169,7 @@ fn loadDataFinish(state: *State, app: *App, pf: zfin.Portfolio, summary: zfin.va
     state.result = zfin.analysis.analyzePortfolio(
         app.allocator,
         summary.allocations,
-        cm,
+        cm_ptr.*,
         pf,
         summary.total_value,
         acct_map_opt,
@@ -220,7 +192,8 @@ pub fn buildStyledLines(state: *State, app: *App, arena: std.mem.Allocator) ![]c
         total_value = summary.total_value;
         if (app.portfolio.file) |pf| {
             const benchmark = @import("../analytics/benchmark.zig");
-            const cm_entries = if (state.classification_map) |cm| cm.entries else &.{};
+            const cm_entries: []const zfin.classification.ClassificationEntry =
+                if (app.portfolio.classificationMap()) |cm| cm.entries else &.{};
             const split = benchmark.deriveAllocationSplit(
                 summary.allocations,
                 cm_entries,
@@ -529,7 +502,7 @@ test "tab.init produces zero-defaulted state" {
     try tab.init(&state, &dummy_app);
     try testing.expectEqual(false, state.loaded);
     try testing.expect(state.result == null);
-    try testing.expect(state.classification_map == null);
+    // classification_map lives on PortfolioData now (not on tab state).
     // Default sector granularity is mid (matches CLI default).
     try testing.expectEqual(zfin.analysis.Granularity.mid, state.sector_granularity);
 }

src/tui/portfolio_tab.zig

@@ -135,6 +135,11 @@ pub const Action = enum {
     /// Select the cursor row's symbol as the currently-active
     /// symbol for the per-symbol tabs (quote/perf/options/etc.).
     select_symbol,
+    /// Toggle the symbol-info overlay popup. Open at cursor
+    /// row's symbol when closed; close when open and cursor is
+    /// on the same symbol; re-target when open and cursor is on
+    /// a different symbol.
+    toggle_overlay,
 };
 
 // ── Tab-private state ─────────────────────────────────────────
@@ -260,6 +265,10 @@ pub const meta: framework.TabMeta(Action) = .{
         .{ .action = .clear_account_filter, .key = .{ .codepoint = vaxis.Key.escape } },
         .{ .action = .select_symbol, .key = .{ .codepoint = 's' } },
         .{ .action = .select_symbol, .key = .{ .codepoint = vaxis.Key.space } },
+        // Capital K: Vim-style "what is this" toggle. Opens
+        // (or re-targets) the symbol-info overlay for the
+        // cursor row's symbol.
+        .{ .action = .toggle_overlay, .key = .{ .codepoint = 'K' } },
     },
     .action_labels = std.enums.EnumArray(Action, []const u8).init(.{
         .expand_collapse = "Expand/collapse position",
@@ -269,12 +278,14 @@ pub const meta: framework.TabMeta(Action) = .{
         .open_account_picker = "Filter by account",
         .clear_account_filter = "Clear account filter",
         .select_symbol = "Select symbol",
+        .toggle_overlay = "Show symbol details",
     }),
     .status_hints = &.{
         .sort_col_prev,
         .sort_col_next,
         .sort_reverse,
         .open_account_picker,
+        .toggle_overlay,
     },
 };
 
@@ -397,6 +408,17 @@ pub const tab = struct {
                 const msg = std.fmt.bufPrint(&tmp_buf, "Active: {s}", .{row.symbol}) catch "Active";
                 app.setStatus(msg);
             },
+            .toggle_overlay => {
+                // Resolve the cursor row's symbol; pass empty
+                // string when not on a symbol row so toggleOverlay
+                // closes any open overlay.
+                const sym: []const u8 = blk: {
+                    if (state.rows.items.len == 0) break :blk "";
+                    if (state.cursor >= state.rows.items.len) break :blk "";
+                    break :blk state.rows.items[state.cursor].symbol;
+                };
+                app.toggleOverlay(sym);
+            },
         }
     }
 

src/tui/review_tab.zig

@@ -63,6 +63,14 @@ pub const Action = enum {
     /// sector-level findings. The latter case is harmless — the
     /// active symbol just doesn't change anything per-tab.
     select_symbol,
+    /// Toggle the symbol-info overlay popup. Open at cursor
+    /// row's symbol when closed; close when open and cursor is
+    /// on the same symbol; re-target when open and cursor is on
+    /// a different symbol. For findings rows, the symbol used is
+    /// the finding's `target` (which is the symbol for
+    /// per-symbol findings; harmless no-op label like "Technology"
+    /// for sector-level ones).
+    toggle_overlay,
 };
 
 /// Modal sub-state. `.normal` lets keystrokes flow through the
@@ -96,10 +104,6 @@ pub const State = struct {
     loaded: bool = false,
     /// Computed view. Owned by State; freed in `deinit` and `reload`.
     view: ?review_view.ReviewView = null,
-    /// Per-portfolio classification metadata (`metadata.srf`). Loaded
-    /// lazily on first activation, kept across reloads (cheap and
-    /// rarely-changing). Freed in `deinit`.
-    classification_map: ?zfin.classification.ClassificationMap = null,
     /// Active sort field. Default `.sector` (asc) provides the
     /// "grouped by sector with symbol-asc tiebreaker" entry state
     /// — see `views/review.sortRows` for why the sector column
@@ -193,6 +197,9 @@ pub const meta: framework.TabMeta(Action) = .{
         // Mirrors portfolio_tab so muscle memory transfers.
         .{ .action = .select_symbol, .key = .{ .codepoint = 's' } },
         .{ .action = .select_symbol, .key = .{ .codepoint = vaxis.Key.space } },
+        // Capital K: Vim-style "what is this" toggle. Same
+        // binding as portfolio_tab so the gesture transfers.
+        .{ .action = .toggle_overlay, .key = .{ .codepoint = 'K' } },
     },
     .action_labels = std.enums.EnumArray(Action, []const u8).init(.{
         .sort_col_next = "Sort: next column",
@@ -203,12 +210,14 @@ pub const meta: framework.TabMeta(Action) = .{
         .unack = "Un-acknowledge finding",
         .toggle_show_acked = "Toggle show acked findings",
         .select_symbol = "Select symbol",
+        .toggle_overlay = "Show symbol details",
     }),
     .status_hints = &.{
         .ack,
         .unack,
         .toggle_show_acked,
         .select_symbol,
+        .toggle_overlay,
         .sort_col_prev,
         .sort_col_next,
     },
@@ -254,20 +263,19 @@ pub const tab = struct {
     pub const deactivate = framework.noopDeactivate(State);
 
     /// Manual refresh: drops the cached view and re-builds. Also
-    /// clears the dividend cache (in case new dividends arrived) and
-    /// the shared `account_map` so accounts.srf gets re-read. The
-    /// classification_map persists — it's per-portfolio, not
-    /// per-refresh. The journal is reloaded too in case the user
-    /// edited acknowledgments.srf out-of-band.
+    /// invalidates the shared `account_map` and `classification_map`
+    /// on PortfolioData so the next load re-reads `accounts.srf` /
+    /// `metadata.srf` from disk (the user may have edited either).
+    /// The journal is reloaded too in case the user edited
+    /// acknowledgments.srf out-of-band.
     pub fn reload(state: *State, app: *App) !void {
         if (state.view) |*v| v.deinit(app.allocator);
         state.view = null;
         if (state.findings_view) |*fv| fv.deinit(app.allocator);
         state.findings_view = null;
         state.loaded = false;
-        // Drop the cached account_map so the worker re-reads
-        // accounts.srf on the next accountMap() call.
         app.portfolio.invalidateAccountMap();
+        app.portfolio.invalidateClassificationMap();
         loadJournal(state, app);
         loadData(state, app);
     }
@@ -306,6 +314,7 @@ pub const tab = struct {
                 rebuildFindingsView(state, app);
             },
             .select_symbol => selectSymbolAtCursor(state, app),
+            .toggle_overlay => toggleOverlayAtCursor(state, app),
         }
     }
 
@@ -785,6 +794,31 @@ fn selectSymbolAtCursor(state: *State, app: *App) void {
     app.setStatus(msg);
 }
 
+/// Resolve the cursor row's symbol and call `app.toggleOverlay`.
+/// Empty cursor section → empty symbol → toggleOverlay closes
+/// any open overlay. For findings rows, the target field doubles
+/// as the symbol (per-symbol findings) or as a non-symbol label
+/// (sector findings) — the latter makes the overlay show "no
+/// metadata.srf entry" for the bogus key, which is fine.
+fn toggleOverlayAtCursor(state: *State, app: *App) void {
+    const symbol: []const u8 = switch (cursorSection(state)) {
+        .empty => "",
+        .holdings => blk: {
+            const view = state.view orelse break :blk "";
+            const local = cursorLocalIndex(state);
+            if (local >= view.rows.len) break :blk "";
+            break :blk view.rows[local].symbol;
+        },
+        .findings => blk: {
+            const fv = state.findings_view orelse break :blk "";
+            const local = cursorLocalIndex(state);
+            if (local >= fv.rows.len) break :blk "";
+            break :blk fv.rows[local].target;
+        },
+    };
+    app.toggleOverlay(symbol);
+}
+
 /// Free `state.note_fragments` items + the slice. Idempotent.
 fn clearNoteFragments(state: *State, allocator: std.mem.Allocator) void {
     for (state.note_fragments.items) |frag| allocator.free(frag);
@@ -878,39 +912,23 @@ fn loadData(state: *State, app: *App) void {
     const pf = app.portfolio.file orelse return;
     const summary_ptr = if (app.portfolio.summary) |*s| s else return;
 
-    // Lazy-load classifications (per-tab; analysis_tab loads its own copy).
-    if (state.classification_map == null) {
-        if (app.anchorPath()) |ppath| {
-            const dir_end = if (std.mem.lastIndexOfScalar(u8, ppath, std.fs.path.sep)) |idx| idx + 1 else 0;
-            const meta_path = std.fmt.allocPrint(app.allocator, "{s}metadata.srf", .{ppath[0..dir_end]}) catch return;
-            defer app.allocator.free(meta_path);
-
-            const file_data = std.Io.Dir.cwd().readFileAlloc(app.io, meta_path, app.allocator, .limited(1024 * 1024)) catch {
-                app.setStatus("No metadata.srf found. Run: zfin enrich <portfolio.srf> > metadata.srf");
-                return;
-            };
-            defer app.allocator.free(file_data);
-
-            state.classification_map = zfin.classification.parseClassificationFile(app.allocator, file_data) catch {
-                app.setStatus("Error parsing metadata.srf");
-                return;
-            };
-        }
-    }
-
     // Tier 1 accessors block on their respective worker futures.
-    // Review needs candles, dividends, and the account map; this
-    // is the first tab where all three workers' costs may show
-    // up as visible wait. Most users will hit portfolio first
-    // (where snapshots blocks if needed) before navigating to
-    // review, so the candles + dividends workers are usually
-    // done by the time we get here.
+    // Review needs candles, dividends, classification, and the
+    // account map; this is the first tab where all four workers'
+    // costs may show up as visible wait. Most users will hit
+    // portfolio first (where snapshots blocks if needed) before
+    // navigating to review, so the candles + dividends workers
+    // are usually done by the time we get here.
     const candle_map = app.portfolio.candles() orelse {
         app.setStatus("Portfolio data not loaded");
         return;
     };
     const dividend_map = app.portfolio.dividends();
     const acct_map_opt: ?zfin.analysis.AccountMap = if (app.portfolio.accountMap()) |amp| amp.* else null;
+    const cm_ptr = app.portfolio.classificationMap() orelse {
+        app.setStatus("No metadata.srf found. Run: zfin enrich <portfolio.srf> > metadata.srf");
+        return;
+    };
 
     if (state.view) |*v| v.deinit(app.allocator);
     state.view = review_view.buildReview(
@@ -920,7 +938,7 @@ fn loadData(state: *State, app: *App) void {
         candle_map,
         dividend_map,
         pf,
-        state.classification_map orelse return,
+        cm_ptr.*,
         acct_map_opt,
         app.today,
         app.anchorPath() orelse "",
@@ -1018,7 +1036,6 @@ pub fn deinitState(state: *State, allocator: std.mem.Allocator) void {
     if (state.view) |*v| v.deinit(allocator);
     if (state.findings_view) |*fv| fv.deinit(allocator);
     if (state.journal) |*j| j.deinit();
-    if (state.classification_map) |*cm| cm.deinit();
     for (state.note_fragments.items) |frag| allocator.free(frag);
     state.note_fragments.deinit(allocator);
     state.* = .{};
@@ -2307,7 +2324,6 @@ test "deinitState: cleans up view (leak check)" {
     var state: State = .{
         .loaded = true,
         .view = view,
-        .classification_map = null, // owned by caller in this test
         .sort_field = .sector,
         .sort_dir = .asc,
     };