Shell: only its own replies, Apps by their names, and rm as Unix has it (#67)

The Shell shows the replies to its own commands and nothing else. The
console knows who each line is printed for (Console::As, Console::origin):
a command run from the Shell prints as the Shell's, and what answers it
later from another task carries that along (ls, tasks, du, cp, update
check, sd list, screenshot, gemini get). Ctrl+b shows everything instead.
This replaces the ten-second window, which was a guess.

An App's name with a capital opens it (Notes, Irc, Wifi, Gnss, Gemini, Lora,
Storage, Shell, System, Settings), from the Shell and from the consoles.

rm needs -r for a folder, here and over the consoles. In the Shell a file,
or a folder with something in it, is asked about unless -f; an empty folder
with -r goes without a word.

The Shell now hands its line to the main loop to run: run from inside the
key handler, rm on a folder overflowed the loop's stack and crashed the
device. `info` says which App is in front.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01EhqxQ49eCju4CzKYNjZzwT

lib/apps_model/src/shell_log.cpp

@@ -4,12 +4,6 @@
 
 namespace roro {
 
-bool ShellLog::wanted(const std::string& line, uint32_t nowMs) const {
-    if (line.rfind("status: heap ", 0) == 0) return false;
-    if (background_) return true;
-    return ranOne_ && nowMs - lastCommandMs_ < kMineMs;  // unsigned: right across the clock's wrap
-}
-
 void ShellLog::push(const std::string& line) {
     lines_.push_back(line);
     bytes_ += line.size() + 1;
@@ -22,7 +16,7 @@ void ShellLog::push(const std::string& line) {
 
 void ShellLog::add(const std::string& line) { push(line); }
 
-void ShellLog::feed(const char* data, size_t len, uint32_t nowMs) {
+void ShellLog::feed(const char* data, size_t len) {
     for (size_t i = 0; i < len; i++) {
         char c = data[i];
         if (c == '\r') continue;
@@ -30,7 +24,7 @@ void ShellLog::feed(const char* data, size_t len, uint32_t nowMs) {
             if (partial_.size() < 512) partial_ += c;  // a line that never ends doesn't take the heap
             continue;
         }
-        if (wanted(partial_, nowMs)) push(partial_);
+        if (partial_.rfind("status: heap ", 0) != 0) push(partial_);
         partial_.clear();
     }
 }
@@ -61,7 +55,9 @@ std::vector<std::string> commandWords(const char* helpText) {
             if (start != std::string::npos) {
                 size_t end = one.find(' ', start);
                 std::string word = one.substr(start, end == std::string::npos ? std::string::npos : end - start);
-                bool plain = !word.empty() && std::all_of(word.begin(), word.end(), [](char ch) { return ch >= 'a' && ch <= 'z'; });
+                // Small letters, and for an App's name a capital first.
+                bool plain = !word.empty() && std::all_of(word.begin() + 1, word.end(), [](char ch) { return ch >= 'a' && ch <= 'z'; }) &&
+                             ((word[0] >= 'a' && word[0] <= 'z') || (word[0] >= 'A' && word[0] <= 'Z'));
                 if (plain && std::find(words.begin(), words.end(), word) == words.end()) words.push_back(word);
             }
             if (bar == std::string::npos) break;