Fix/post merge fixes for 45

CHANGELOG.md

@@ -7,18 +7,29 @@ All notable changes to bitcoin-tui are documented here.
 ### Added
 - **Mouse support** - click tabs to switch between them
 - **Clickable footer bar** - footer hints are now rendered as a dedicated mouse-aware footer bar; click refresh/search/quit and tab-specific actions directly
-- **Lua scripting** - load custom tabs from Lua scripts with `--tab <path.lua>`; scripts can call a configurable set of RPC methods (allowlisted with `--allow-rpc`); optional debug log via `--debuglog`; bundled example: slow-block monitor tab
+- **Lua scripting** - load custom tabs from Lua scripts with `--tab <path.lua>`; scripts can call a configurable set of RPC methods (allowlisted with `--allow-rpc`); optional debug log via `--debuglog`; bundled examples: slow-block monitor, wallet info, feerate diagram
 - **Lua footer buttons** - Lua scripts can register clickable footer actions with `btcui_add_footer_button(label, callback)`; `btcui_show_search_button(bool)` and `btcui_show_quit_button(bool)` let scripts hide the global search and quit buttons per-tab
 - **Config file support** - options can be set in a `config.toml` file (Linux: `$XDG_CONFIG_HOME/bitcoin-tui/` or `~/.config/bitcoin-tui/`; macOS: `~/Library/Application Support/bitcoin-tui/`; Windows: `%APPDATA%\bitcoin-tui\`); CLI flags override file values; path can be changed with `--config` -
 - CLI11 replaces hand-rolled argument parsing; adds `--help` grouping, `--config` file support, and stricter validation of unknown flags
 - **Debug file output** — `--debug --debug-file <path>` writes internal debug data to a file (append mode); both flags must be used together
 - **Lua footer button keyboard shortcuts** - `btcui_add_footer_button` now auto-extracts the keyboard shortcut from `[x]` patterns in the label (e.g. `"[r] QR"` binds the `r` key automatically); an explicit key can also be passed as the optional third argument
 - **QR code overlay** - `btcui_open_qr_overlay(data)` opens a full-screen QR overlay; accepts a plain address string or a list of `{label, data}` items for a tabbed overlay; `left arrow/ right arrow` arrow keys switch between tabs; 
 - **Lua table row selection** - users can select a row in any Lua table panel by pressing `arrow down` to focus the panel, `Enter` to enter selection mode, `arrow up / arrow down` to move the selection, and `Esc` to exit selection mode; selected row is highlighted; `Table:selected_key()` returns the key of the selected row and `Table:selected_value(column)` returns the formatted value of any column in that row, enabling Lua callbacks to act on the user's selection
+- **testnet4 support** - `--testnet4` shortcut for connecting to the testnet4 network
+- **Windows support** - native MSVC build target with bundled application icon, automatic detection of the default Windows bitcoin data directory, and a dedicated console window when launched from Explorer
+- **Lua scrollable tables** - large Lua tables can now be scrolled when they exceed the available panel height
+- **Lua summary panels** - Lua scripts can render compact key/value summary panels alongside tables
+- **Lua untitled panels** - panels in Lua tabs can omit a title for a cleaner layout
+- **Lua address element** - styled address rendering element exposed to the Lua API
+- **Lua wallet RPC selection** - `btcui_rpc_wallet(name)` directs subsequent RPC calls at a specific named wallet
+- **Lua script options** - `btcui_option(name)` reads CLI/config-file values passed through to scripts
+- **Lua timestamp formats** - multiple timestamp formats now exposed to Lua scripts
 
 ### Changed
 - FTXUI updated from v5.0.0 to v6.1.9
 - Footer hints are unified across tabs: context-sensitive actions now appear in one shared footer bar instead of each tab rendering its own status text
+- FetchContent dependencies are now pinned by SHA256 hash for reproducibility
+
 
 ## [0.8.3] - 2026-04-11
 

lua/api.lua

@@ -138,6 +138,26 @@ function btcui_show_search_button(show) end
 ---@param show boolean
 function btcui_show_quit_button(show) end
 
+--- Return the current terminal dimensions in cells (width, height).
+--- The value reflects the most recent render and updates as the user
+--- resizes the terminal. Useful for sizing plots or laying out
+--- variable-width content. Pair with btcui_on_resize() to react to
+--- changes immediately instead of on the next refresh tick.
+---@return integer width
+---@return integer height
+function btcui_screen_size() end
+
+--- Register a callback that fires whenever the terminal is resized.
+--- The callback receives the new (width, height). Only one handler
+--- can be registered — a second call replaces the previous one.
+--- A common pattern is to wake a refresh timer:
+---
+---   local timer = btcui_set_interval(5, refresh)
+---   btcui_on_resize(function(w, h) btcui_wake(timer) end)
+---
+---@param callback fun(width: integer, height: integer)
+function btcui_on_resize(callback) end
+
 --- Return a styled address cell value. The address is rendered with
 --- alternating bold groups of 4 characters (e.g. "bc1q ar0s rr7x …"),
 --- making it easier to scan visually. Pass the result as a cell value

lua/examples/feeratediagram.lua

@@ -9,8 +9,10 @@
 btcui_set_name("Feerate")
 
 local REFRESH     = tonumber(btcui_option("refresh", 5))
-local PLOT_WIDTH  = tonumber(btcui_option("width", 80))
+-- width=0 (default) auto-scales to the terminal width; any positive value pins it.
+local FIXED_WIDTH = tonumber(btcui_option("width", 0))
 local PLOT_HEIGHT = tonumber(btcui_option("height", 14))
+local PLOT_WIDTH  = FIXED_WIDTH > 0 and FIXED_WIDTH or 80
 local BLOCK_WU    = 4000000  -- 4 MWU = one block
 
 ----------------------------------------------------------------------
@@ -151,6 +153,14 @@ end
 local warned_no_rpc = false
 
 local function refresh()
+    -- Resize the plot to fill the terminal width unless the user pinned it.
+    -- Subtract the panel border (2), the table column's left-gutter (1), and
+    -- the Y-axis label area (AXIS_PAD).
+    if FIXED_WIDTH <= 0 then
+        local sw = btcui_screen_size()
+        PLOT_WIDTH = math.max(20, sw - AXIS_PAD - 3)
+    end
+
     local info = btcui_rpc("getmempoolinfo")
     if info then
         mempool_summary:set({
@@ -294,3 +304,9 @@ end
 local timer = btcui_set_interval(REFRESH, refresh)
 
 btcui_add_footer_button(" ↺ refresh", function() btcui_wake(timer) end)
+
+-- Re-run refresh() immediately when the terminal is resized so the plot
+-- adapts to the new width without waiting for the next periodic tick.
+if FIXED_WIDTH <= 0 then
+    btcui_on_resize(function() btcui_wake(timer) end)
+end

src/tabs/luatab.cpp

@@ -24,17 +24,37 @@ using Clock     = std::chrono::system_clock;
 using TimePoint = Clock::time_point;
 
 static const std::set<std::string> DEFAULT_RPC_ALLOWLIST = {
-    "decoderawtransaction",  "decodescript",      "estimatesmartfee",
-    "getbestblockhash",      "getblock",          "getblockchaininfo",
-    "getblockcount",         "getblockhash",      "getblockheader",
-    "getblockstats",         "getchaintips",      "getconnectioncount",
-    "getdeploymentinfo",         "getindexinfo",      "getmempoolancestors",
-    "getmempoolcluster",         "getmempooldescendants",
-    "getmempoolentry",           "getmempoolfeeratediagram",
-    "getmempoolinfo",            "getmininginfo",     "getnettotals",
-    "getnetworkhashps",          "getnetworkinfo",    "getnodeaddresses",
-    "getpeerinfo",               "getrawmempool",     "getrawtransaction",
-    "gettxout",                  "gettxoutsetinfo",   "logging",
+    "decoderawtransaction",
+    "decodescript",
+    "estimatesmartfee",
+    "getbestblockhash",
+    "getblock",
+    "getblockchaininfo",
+    "getblockcount",
+    "getblockhash",
+    "getblockheader",
+    "getblockstats",
+    "getchaintips",
+    "getconnectioncount",
+    "getdeploymentinfo",
+    "getindexinfo",
+    "getmempoolancestors",
+    "getmempoolcluster",
+    "getmempooldescendants",
+    "getmempoolentry",
+    "getmempoolfeeratediagram",
+    "getmempoolinfo",
+    "getmininginfo",
+    "getnettotals",
+    "getnetworkhashps",
+    "getnetworkinfo",
+    "getnodeaddresses",
+    "getpeerinfo",
+    "getrawmempool",
+    "getrawtransaction",
+    "gettxout",
+    "gettxoutsetinfo",
+    "logging",
     "uptime",
 };
 
@@ -137,7 +157,9 @@ class LuaScript {
     }
 
   public:
-    std::ostream* debug_out = nullptr;
+    std::ostream*           debug_out = nullptr;
+    sol::protected_function on_resize_fn_;
+    std::string             on_resize_src_;
 
   private:
     sol::state                             lua_;
@@ -465,6 +487,18 @@ void LuaTab::register_lua_api(LuaScript& script) {
         lua_tab_state_.update([&](auto& st) { st.tab_name = name; });
     };
 
+    lua_["btcui_screen_size"] = [this](sol::this_state ts) -> sol::variadic_results {
+        sol::variadic_results vr;
+        vr.push_back({ts, sol::in_place, screen_.dimx()});
+        vr.push_back({ts, sol::in_place, screen_.dimy()});
+        return vr;
+    };
+
+    lua_["btcui_on_resize"] = [&script](sol::protected_function fn) {
+        script.on_resize_src_ = lua_source_id(fn.lua_state());
+        script.on_resize_fn_  = std::move(fn);
+    };
+
     lua_["btcui_option"] = [this](sol::this_state ts, const std::string& key,
                                   sol::optional<sol::object> default_val) -> sol::object {
         if (tab_options_.contains(key))
@@ -668,6 +702,17 @@ void LuaTab::lua_thread_fn(std::unique_ptr<LuaScript> script) {
             }
         }
 
+        // 0b. Fire resize callback if the UI reported a size change
+        if (resize_pending_.exchange(false) && script->on_resize_fn_.valid()) {
+            auto result = script->on_resize_fn_(screen_.dimx(), screen_.dimy());
+            if (!result.valid()) {
+                sol::error err = result;
+                report_callback_error(-1, script->on_resize_src_, err.what());
+            } else {
+                clear_callback_error(-1);
+            }
+        }
+
         // 1. Read new log lines, feed to Lua callbacks
         if (logfile) {
             while (std::getline(logfile, line)) {
@@ -1095,6 +1140,13 @@ static Element render_cell_element(const std::string& prefix, const CellValue& c
 }
 
 Element LuaTab::render(const AppState& /*snap*/) {
+    int dx     = screen_.dimx();
+    int dy     = screen_.dimy();
+    int prev_x = last_dimx_.exchange(dx);
+    int prev_y = last_dimy_.exchange(dy);
+    if ((prev_x != 0 || prev_y != 0) && (prev_x != dx || prev_y != dy))
+        resize_pending_.store(true);
+
     struct PanelInfo {
         Elements chrome;             // title, header+separator (rendered before data rows)
         Elements data_rows;          // scrollable content

src/tabs/luatab.hpp

@@ -90,5 +90,8 @@ class LuaTab : public Tab {
     std::atomic<int>                 focused_panel_{-1};
     std::atomic<bool>                panel_scrolling_{false};
     mutable Guarded<std::deque<int>> btn_click_queue_;
+    std::atomic<bool>                resize_pending_{false};
+    std::atomic<int>                 last_dimx_{0};
+    std::atomic<int>                 last_dimy_{0};
     std::thread                      lua_thread_;
 };