practicode - npm Package Compare versions

Comparing version 0.1.5 to 0.1.6

docs/ARCHITECTURE.md

+# Architecture
+
+Practicode is local-first: user data stays under `.practicode/`, `problems/`, and `submissions/`.
+
+## Source Layout
+
+- `src/core.rs` owns problem data, state loading/saving, judging, and file generation.
+- `src/core/profile.rs` owns practice-profile defaults and normalization.
+- `src/tui.rs` owns Ratatui rendering and interaction flow.
+- `src/tui/commands.rs` owns the command palette catalog.
+- `src/ai.rs` owns provider commands, daemon/model checks, and AI prompts.
+- `src/update.rs` owns update checks.
+- `src/text.rs` owns terminal text editing and markdown/plain rendering helpers.
+
+## Extension Rules
+
+- Add domain logic under the owning module first; keep `tui.rs` as orchestration and rendering.
+- Add user-visible commands in `src/tui/commands.rs`, then route behavior in `PracticodeApp::handle_command`.
+- Add persisted profile settings to `Settings`, normalize them in `normalize_settings`, and cover old-state compatibility with tests.
+- Keep provider-specific behavior in `src/ai.rs`; TUI should ask for status or start tasks, not know provider internals.
+- Keep local user data backwards-compatible. Missing fields should default cleanly.
+
+## Release
+
+See [MAINTAINING.md](MAINTAINING.md) for tag-based releases.

src/core/profile.rs

+pub const DIFFICULTIES: &[&str] = &["auto", "easy", "medium", "hard"];
+
+pub fn default_difficulty() -> String {
+    "auto".to_string()
+}
+
+pub fn normalize_difficulty(difficulty: &str) -> String {
+    let difficulty = difficulty.trim().to_lowercase();
+    if DIFFICULTIES.contains(&difficulty.as_str()) {
+        difficulty
+    } else {
+        default_difficulty()
+    }
+}
+
+pub fn parse_topic_list(value: &str) -> Vec<String> {
+    let mut topics = Vec::new();
+    for topic in value.split(',') {
+        let topic = topic.trim().trim_start_matches('#').trim().to_lowercase();
+        if !topic.is_empty() && !topics.contains(&topic) {
+            topics.push(topic);
+        }
+    }
+    topics
+}
+
+pub fn normalize_topic_list(topics: &[String]) -> Vec<String> {
+    parse_topic_list(&topics.join(","))
+}

src/tui/commands.rs

+#[derive(Clone, Copy)]
+pub(super) struct CommandHint {
+    pub(super) insert: &'static str,
+    pub(super) display: &'static str,
+    pub(super) desc_key: &'static str,
+    pub(super) keep_open: bool,
+    pub(super) help: bool,
+}
+
+pub(super) const COMMAND_HINTS: &[CommandHint] = &[
+    CommandHint {
+        insert: "run",
+        display: "/run",
+        desc_key: "cmd_run",
+        keep_open: false,
+        help: true,
+    },
+    CommandHint {
+        insert: "code",
+        display: "/code",
+        desc_key: "cmd_code",
+        keep_open: false,
+        help: true,
+    },
+    CommandHint {
+        insert: "next",
+        display: "/next",
+        desc_key: "cmd_next",
+        keep_open: false,
+        help: true,
+    },
+    CommandHint {
+        insert: "back",
+        display: "/back",
+        desc_key: "cmd_prev",
+        keep_open: false,
+        help: true,
+    },
+    CommandHint {
+        insert: "problems",
+        display: "/problems",
+        desc_key: "cmd_list",
+        keep_open: false,
+        help: true,
+    },
+    CommandHint {
+        insert: "open ",
+        display: "/open <id>",
+        desc_key: "cmd_open",
+        keep_open: true,
+        help: true,
+    },
+    CommandHint {
+        insert: "answer",
+        display: "/answer",
+        desc_key: "cmd_giveup",
+        keep_open: false,
+        help: true,
+    },
+    CommandHint {
+        insert: "hint ",
+        display: "/hint <request>",
+        desc_key: "cmd_hint",
+        keep_open: true,
+        help: true,
+    },
+    CommandHint {
+        insert: "profile",
+        display: "/profile",
+        desc_key: "cmd_profile",
+        keep_open: false,
+        help: true,
+    },
+    CommandHint {
+        insert: "difficulty auto",
+        display: "/difficulty auto",
+        desc_key: "cmd_difficulty",
+        keep_open: false,
+        help: true,
+    },
+    CommandHint {
+        insert: "difficulty easy",
+        display: "/difficulty easy",
+        desc_key: "cmd_difficulty",
+        keep_open: false,
+        help: false,
+    },
+    CommandHint {
+        insert: "difficulty medium",
+        display: "/difficulty medium",
+        desc_key: "cmd_difficulty",
+        keep_open: false,
+        help: false,
+    },
+    CommandHint {
+        insert: "difficulty hard",
+        display: "/difficulty hard",
+        desc_key: "cmd_difficulty",
+        keep_open: false,
+        help: false,
+    },
+    CommandHint {
+        insert: "topics ",
+        display: "/topics <list>",
+        desc_key: "cmd_topics",
+        keep_open: true,
+        help: true,
+    },
+    CommandHint {
+        insert: "avoid ",
+        display: "/avoid <list>",
+        desc_key: "cmd_avoid",
+        keep_open: true,
+        help: true,
+    },
+    CommandHint {
+        insert: "provider codex",
+        display: "/provider codex",
+        desc_key: "cmd_provider",
+        keep_open: false,
+        help: true,
+    },
+    CommandHint {
+        insert: "provider claude",
+        display: "/provider claude",
+        desc_key: "cmd_provider",
+        keep_open: false,
+        help: false,
+    },
+    CommandHint {
+        insert: "model auto",
+        display: "/model auto",
+        desc_key: "cmd_model_auto",
+        keep_open: false,
+        help: true,
+    },
+    CommandHint {
+        insert: "model ",
+        display: "/model <name>",
+        desc_key: "cmd_model_custom",
+        keep_open: true,
+        help: false,
+    },
+    CommandHint {
+        insert: "language python",
+        display: "/language python",
+        desc_key: "cmd_lang",
+        keep_open: false,
+        help: true,
+    },
+    CommandHint {
+        insert: "language ts",
+        display: "/language ts",
+        desc_key: "cmd_lang",
+        keep_open: false,
+        help: false,
+    },
+    CommandHint {
+        insert: "language java",
+        display: "/language java",
+        desc_key: "cmd_lang",
+        keep_open: false,
+        help: false,
+    },
+    CommandHint {
+        insert: "language rust",
+        display: "/language rust",
+        desc_key: "cmd_lang",
+        keep_open: false,
+        help: false,
+    },
+    CommandHint {
+        insert: "ui en",
+        display: "/ui en",
+        desc_key: "cmd_ui",
+        keep_open: false,
+        help: true,
+    },
+    CommandHint {
+        insert: "ui ko",
+        display: "/ui ko",
+        desc_key: "cmd_ui",
+        keep_open: false,
+        help: false,
+    },
+    CommandHint {
+        insert: "ui ja",
+        display: "/ui ja",
+        desc_key: "cmd_ui",
+        keep_open: false,
+        help: false,
+    },
+    CommandHint {
+        insert: "ui zh",
+        display: "/ui zh",
+        desc_key: "cmd_ui",
+        keep_open: false,
+        help: false,
+    },
+    CommandHint {
+        insert: "ui es",
+        display: "/ui es",
+        desc_key: "cmd_ui",
+        keep_open: false,
+        help: false,
+    },
+    CommandHint {
+        insert: "theme dark",
+        display: "/theme dark",
+        desc_key: "cmd_theme",
+        keep_open: false,
+        help: true,
+    },
+    CommandHint {
+        insert: "theme light",
+        display: "/theme light",
+        desc_key: "cmd_theme",
+        keep_open: false,
+        help: false,
+    },
+    CommandHint {
+        insert: "update",
+        display: "/update",
+        desc_key: "cmd_update",
+        keep_open: false,
+        help: true,
+    },
+    CommandHint {
+        insert: "help",
+        display: "/help",
+        desc_key: "cmd_help",
+        keep_open: false,
+        help: true,
+    },
+    CommandHint {
+        insert: "exit",
+        display: "/exit",
+        desc_key: "cmd_exit",
+        keep_open: false,
+        help: true,
+    },
+];

assets/i18n/en.json

@@ -35,2 +35,6 @@ {
   "cmd_ai": "Ask AI about the current problem and code",
+  "cmd_profile": "Show practice profile",
+  "cmd_difficulty": "Set preferred difficulty",
+  "cmd_topics": "Set preferred topics",
+  "cmd_avoid": "Set topics to avoid",
   "cmd_provider": "Set AI provider",
@@ -37,0 +41,0 @@ "cmd_model": "Set AI model",

assets/i18n/es.json

@@ -35,2 +35,6 @@ {
   "cmd_ai": "Preguntar a AI sobre el problema y codigo actuales",
+  "cmd_profile": "Mostrar perfil de practica",
+  "cmd_difficulty": "Configurar dificultad preferida",
+  "cmd_topics": "Configurar temas preferidos",
+  "cmd_avoid": "Configurar temas a evitar",
   "cmd_provider": "Configurar AI provider",
@@ -37,0 +41,0 @@ "cmd_model": "Configurar AI model",

assets/i18n/ja.json

@@ -35,2 +35,6 @@ {
   "cmd_ai": "現在の問題とコードについて AI に質問",
+  "cmd_profile": "練習プロファイルを表示",
+  "cmd_difficulty": "希望難易度を設定",
+  "cmd_topics": "希望トピックを設定",
+  "cmd_avoid": "避けるトピックを設定",
   "cmd_provider": "AI provider を設定",
@@ -37,0 +41,0 @@ "cmd_model": "AI model を設定",

assets/i18n/ko.json

@@ -35,2 +35,6 @@ {
   "cmd_ai": "현재 문제와 코드에 대해 AI에게 질문",
+  "cmd_profile": "연습 프로파일 보기",
+  "cmd_difficulty": "선호 난이도 설정",
+  "cmd_topics": "선호 주제 설정",
+  "cmd_avoid": "피할 주제 설정",
   "cmd_provider": "AI provider 설정",
@@ -37,0 +41,0 @@ "cmd_model": "AI model 설정",

assets/i18n/zh.json

@@ -35,2 +35,6 @@ {
   "cmd_ai": "向 AI 询问当前题目和代码",
+  "cmd_profile": "显示练习配置",
+  "cmd_difficulty": "设置偏好难度",
+  "cmd_topics": "设置偏好主题",
+  "cmd_avoid": "设置要避开的主题",
   "cmd_provider": "设置 AI provider",
@@ -37,0 +41,0 @@ "cmd_model": "设置 AI model",

assets/practicode-terminal.svg

 <svg width="1200" height="720" viewBox="0 0 1200 720" fill="none" xmlns="http://www.w3.org/2000/svg">
   <rect width="1200" height="720" fill="#070b12"/>
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-  <rect x="88" y="78" width="594" height="440" rx="4" fill="#0f1720" stroke="#00c2d1" stroke-width="2"/>
-  <rect x="704" y="78" width="408" height="440" rx="4" fill="#0d141c" stroke="#31536b" stroke-width="2"/>
-  <text x="112" y="112" fill="#d7e1ec" font-family="SFMono-Regular, Menlo, Consolas, monospace" font-size="18" font-weight="700">Problem</text>
-  <text x="728" y="112" fill="#d7e1ec" font-family="SFMono-Regular, Menlo, Consolas, monospace" font-size="18" font-weight="700">solution.py</text>
-  <text x="112" y="158" fill="#f8fafc" font-family="SFMono-Regular, Menlo, Consolas, monospace" font-size="22" font-weight="700">001. Hello World</text>
-  <text x="112" y="204" fill="#c8d3f5" font-family="SFMono-Regular, Menlo, Consolas, monospace" font-size="16">Difficulty: easy</text>
-  <text x="112" y="232" fill="#c8d3f5" font-family="SFMono-Regular, Menlo, Consolas, monospace" font-size="16">Topics: io</text>
-  <text x="112" y="286" fill="#f8fafc" font-family="SFMono-Regular, Menlo, Consolas, monospace" font-size="17">Print exactly Hello, World! to stdout.</text>
-  <text x="112" y="352" fill="#00a8ff" font-family="SFMono-Regular, Menlo, Consolas, monospace" font-size="17" text-decoration="underline">Input</text>
-  <text x="112" y="386" fill="#f8fafc" font-family="SFMono-Regular, Menlo, Consolas, monospace" font-size="17">No input.</text>
-  <text x="112" y="442" fill="#00a8ff" font-family="SFMono-Regular, Menlo, Consolas, monospace" font-size="17" text-decoration="underline">Output</text>
-  <text x="112" y="476" fill="#f6c177" font-family="SFMono-Regular, Menlo, Consolas, monospace" font-size="17">Hello, World!</text>
-  <text x="728" y="158" fill="#6b7280" font-family="SFMono-Regular, Menlo, Consolas, monospace" font-size="17">  1</text>
-  <text x="776" y="158" fill="#7dd3fc" font-family="SFMono-Regular, Menlo, Consolas, monospace" font-size="17">print</text>
-  <text x="828" y="158" fill="#f8fafc" font-family="SFMono-Regular, Menlo, Consolas, monospace" font-size="17">('Hello, World!')</text>
-  <rect x="64" y="536" width="1072" height="28" fill="#152033"/>
-  <text x="84" y="556" fill="#c8d3f5" font-family="SFMono-Regular, Menlo, Consolas, monospace" font-size="15" font-weight="700">PRACTICODE | 001-hello-world | easy | idle | solved | code:written | python | next:ai | ai:codex/auto</text>
-  <rect x="64" y="586" width="1072" height="58" rx="2" fill="#0b1017" stroke="#008cff" stroke-width="2"/>
-  <text x="84" y="606" fill="#c8d3f5" font-family="SFMono-Regular, Menlo, Consolas, monospace" font-size="15" font-weight="700">Command</text>
-  <text x="84" y="630" fill="#f8fafc" font-family="SFMono-Regular, Menlo, Consolas, monospace" font-size="18">/ai hint about edge cases</text>
+  <rect x="54" y="42" width="1092" height="636" rx="10" fill="#0b111a" stroke="#214c5c" stroke-width="2"/>
+
+  <rect x="76" y="68" width="560" height="430" rx="4" fill="#0f1720" stroke="#00c2d1" stroke-width="2"/>
+  <rect x="664" y="68" width="458" height="430" rx="4" fill="#0d141c" stroke="#f8e71c" stroke-width="2"/>
+
+  <text x="92" y="91" fill="#16d6e8" font-family="SFMono-Regular, Menlo, Consolas, monospace" font-size="15" font-weight="700">Problem</text>
+  <text x="680" y="91" fill="#f8e71c" font-family="SFMono-Regular, Menlo, Consolas, monospace" font-size="15" font-weight="700">&gt; solution.py</text>
+
+  <text x="96" y="128" fill="#f8fafc" font-family="SFMono-Regular, Menlo, Consolas, monospace" font-size="22" font-weight="700">001. Hello World</text>
+  <text x="96" y="164" fill="#c8d3f5" font-family="SFMono-Regular, Menlo, Consolas, monospace" font-size="16">Difficulty: easy    Topics: io</text>
+  <text x="96" y="206" fill="#f8fafc" font-family="SFMono-Regular, Menlo, Consolas, monospace" font-size="17">Print exactly Hello, World! to stdout.</text>
+
+  <text x="96" y="286" fill="#00d2e8" font-family="SFMono-Regular, Menlo, Consolas, monospace" font-size="17" font-weight="700">Input</text>
+  <rect x="96" y="304" width="486" height="44" rx="3" fill="#101d28" stroke="#29495a"/>
+  <text x="112" y="332" fill="#f8fafc" font-family="SFMono-Regular, Menlo, Consolas, monospace" font-size="16">No input.</text>
+
+  <text x="96" y="388" fill="#00d2e8" font-family="SFMono-Regular, Menlo, Consolas, monospace" font-size="17" font-weight="700">Output</text>
+  <rect x="96" y="406" width="486" height="66" rx="3" fill="#101d28" stroke="#29495a"/>
+  <text x="112" y="446" fill="#f6c177" font-family="SFMono-Regular, Menlo, Consolas, monospace" font-size="16">Hello, World!</text>
+
+  <text x="690" y="128" fill="#64748b" font-family="SFMono-Regular, Menlo, Consolas, monospace" font-size="16">  1</text>
+  <text x="738" y="128" fill="#7dd3fc" font-family="SFMono-Regular, Menlo, Consolas, monospace" font-size="16">print</text>
+  <text x="790" y="128" fill="#f8fafc" font-family="SFMono-Regular, Menlo, Consolas, monospace" font-size="16">('Hello, World!')</text>
+
+  <rect x="76" y="512" width="1046" height="30" fill="#152033"/>
+  <text x="94" y="533" fill="#c8d3f5" font-family="SFMono-Regular, Menlo, Consolas, monospace" font-size="15" font-weight="700">PRACTICODE | 001-hello-world | easy | idle | assigned | code:written | python | Esc then / command</text>
+
+  <rect x="76" y="558" width="1046" height="48" rx="2" fill="#0b1017" stroke="#00c2d1" stroke-width="2"/>
+  <text x="94" y="579" fill="#16d6e8" font-family="SFMono-Regular, Menlo, Consolas, monospace" font-size="15" font-weight="700">Command</text>
+  <text x="94" y="596" fill="#f8fafc" font-family="SFMono-Regular, Menlo, Consolas, monospace" font-size="18">/</text>
+
+  <rect x="76" y="614" width="1046" height="46" rx="2" fill="#101923" stroke="#214c5c"/>
+  <text x="94" y="641" fill="#f8fafc" font-family="SFMono-Regular, Menlo, Consolas, monospace" font-size="15">/run  /next  /hint &lt;request&gt;  /profile  /difficulty auto  /topics arrays, strings</text>
 </svg>

Cargo.lock

@@ -360,3 +360,3 @@ # This file is automatically @generated by Cargo.
 name = "practicode"
-version = "0.1.5"
+version = "0.1.6"
 dependencies = [
@@ -363,0 +363,0 @@ "anyhow",

Cargo.toml

 [package]
 name = "practicode"
-version = "0.1.5"
+version = "0.1.6"
 edition = "2024"
@@ -5,0 +5,0 @@ description = "Local-first coding-test practice in a Rust terminal UI with optional AI help."

docs/CONTRIBUTING.md

@@ -12,2 +12,3 @@ # Contributing
 - For larger UI, AI-generation, storage, or packaging changes, open an issue first so the scope is clear.
+- Check [ARCHITECTURE.md](ARCHITECTURE.md) before adding commands, settings, provider behavior, or persisted state.
 - Do not commit local practice data from `.practicode/`, `problems/`, or `submissions/`.
@@ -14,0 +15,0 @@ - Do not include secrets, tokens, private prompts, or generated answer keys in docs or examples.

package.json

 {
   "name": "practicode",
-  "version": "0.1.5",
+  "version": "0.1.6",
   "description": "Local-first coding-test practice in a Rust terminal UI with optional AI help.",
@@ -5,0 +5,0 @@ "license": "MIT",

README.md

@@ -69,13 +69,15 @@ # practicode
 | `/next easy string problem` | Ask AI for a custom next problem |
-| `/prev` | Go back through problem history |
-| `/list` | Browse problems with `up/down` or `j/k`, open with `Enter` |
+| `/back` | Go back through problem history |
+| `/problems` | Browse problems with `up/down` or `j/k`, open with `Enter` |
 | `/open 2` | Open by number, id, or slug |
-| `/giveup` | Show the reference answer |
+| `/answer` | Show the reference answer |
 | `/hint` | Ask the selected AI for a concise hint |
 | `/hint explain my bug` | Ask the selected AI about the current problem and submission |
+| `/profile` | Show your current practice profile |
+| `/difficulty auto` | Set difficulty preference: `auto`, `easy`, `medium`, `hard` |
+| `/topics arrays, strings` | Set preferred topics for future problems |
+| `/avoid dp, graph` | Set topics to avoid in future problems |
 | `/provider codex` | Set AI provider and show local CLI/daemon status |
 | `/model auto` | Use the provider default model for `/hint` and AI-backed `/next` |
-| `/note prefer hashmap practice` | Append a standing note for future problem generation |
-| `/notes` | Show your local next-problem notes |
-| `/lang python` | Set code language: `python`, `ts`, `java`, `rust` |
+| `/language python` | Set code language: `python`, `ts`, `java`, `rust` |
 | `/ui en` | Set UI language: `en`, `ko`, `ja`, `zh`, `es` |
@@ -86,4 +88,8 @@ | `/theme dark` | Set theme: `dark` or `light` |
 
+Older command names such as `/prev`, `/list`, `/giveup`, and `/lang` still work as aliases.
+
 The default UI language is English. Switch it any time with `/ui ko`, `/ui ja`, `/ui zh`, or `/ui es`.
 
+Your practice profile is saved in `.practicode/problem-state.json`. It keeps UI language, code language, theme, preferred difficulty, preferred topics, and topics to avoid. `auto` difficulty follows gradual progression; a fixed difficulty asks local selection and AI generation to prefer that level.
+
 ## AI Problems
@@ -144,4 +150,6 @@
 
+Code layout and extension boundaries live in [docs/ARCHITECTURE.md](docs/ARCHITECTURE.md).
+
 ## License
 
 practicode is MIT licensed. Third-party dependency license notes are in [THIRD_PARTY_LICENSES.md](THIRD_PARTY_LICENSES.md).

src/ai.rs

@@ -126,4 +126,8 @@ use crate::{
 pub fn default_ai_next_prompt(request: &str) -> String {
+    default_ai_next_prompt_with_settings(&Settings::default(), request)
+}
+
+pub fn default_ai_next_prompt_with_settings(settings: &Settings, request: &str) -> String {
     format!(
-        "Read AGENTS.md, docs/problem-authoring-notes.md if present, .practicode/problem_notes.md if present, problems/INDEX.md if present, .practicode/problem_bank.json if present, and .practicode/problem-state.json. Create exactly one new non-duplicate coding practice problem. The built-in 001-hello-world already exists, so do not duplicate it. User request: {}. Make the smallest valid edits: update .practicode/problem_bank.json, one problem directory, problems/INDEX.md, and .practicode/problem-state.json. Do not include the answer in the problem statement.",
+        "Read AGENTS.md, docs/problem-authoring-notes.md if present, .practicode/problem_notes.md if present, problems/INDEX.md if present, .practicode/problem_bank.json if present, and .practicode/problem-state.json. Create exactly one new non-duplicate coding practice problem. The built-in 001-hello-world already exists, so do not duplicate it. User request: {}. Practice profile: difficulty preference: {}; preferred topics: {}; avoid topics: {}; code language: {}; UI language: {}. Treat difficulty auto as gradual progression from state; otherwise prefer the requested difficulty unless the direct user request conflicts. Make the smallest valid edits: update .practicode/problem_bank.json, one problem directory, problems/INDEX.md, and .practicode/problem-state.json. Do not include the answer in the problem statement.",
         if request.is_empty() {
@@ -133,3 +137,8 @@ "(none)"
             request
-        }
+        },
+        settings.difficulty,
+        list_or_none(&settings.topics),
+        list_or_none(&settings.avoid_topics),
+        settings.language,
+        settings.ui_language
     )
@@ -309,3 +318,5 @@ }
     exec.push(' ');
-    exec.push_str(&sh_quote(&default_ai_next_prompt(request)));
+    exec.push_str(&sh_quote(&default_ai_next_prompt_with_settings(
+        settings, request,
+    )));
     format!("{start}; {exec}")
@@ -328,3 +339,5 @@ }
     claude.push_str(" -p ");
-    claude.push_str(&sh_quote(&default_ai_next_prompt(request)));
+    claude.push_str(&sh_quote(&default_ai_next_prompt_with_settings(
+        settings, request,
+    )));
     format!(
@@ -345,2 +358,10 @@ "claude daemon status >/dev/null 2>&1 || true; cd {}; {}",
 
+fn list_or_none(values: &[String]) -> String {
+    if values.is_empty() {
+        "(none)".to_string()
+    } else {
+        values.join(", ")
+    }
+}
+
 #[cfg(test)]
@@ -347,0 +368,0 @@ mod tests {

src/core.rs

@@ -12,2 +12,7 @@ use crate::process::{CommandSpec, run_capture, which};
 
+mod profile;
+pub use profile::{
+    DIFFICULTIES, default_difficulty, normalize_difficulty, normalize_topic_list, parse_topic_list,
+};
+
 pub const LANGUAGES: &[&str] = &["python", "ts", "java", "rust"];
@@ -29,2 +34,8 @@ pub use crate::i18n::{UI_LANGUAGES, normalize_ui_language, ui_text};
     pub theme: String,
+    #[serde(default = "default_difficulty")]
+    pub difficulty: String,
+    #[serde(default, skip_serializing_if = "Vec::is_empty")]
+    pub topics: Vec<String>,
+    #[serde(default, skip_serializing_if = "Vec::is_empty")]
+    pub avoid_topics: Vec<String>,
     #[serde(default = "default_editor")]
@@ -48,2 +59,5 @@ pub editor: String,
             theme: default_theme(),
+            difficulty: default_difficulty(),
+            topics: Vec::new(),
+            avoid_topics: Vec::new(),
             editor: default_editor(),
@@ -370,2 +384,5 @@ next_source: default_next_source(),
     }
+    settings.difficulty = normalize_difficulty(&settings.difficulty);
+    settings.topics = normalize_topic_list(&settings.topics);
+    settings.avoid_topics = normalize_topic_list(&settings.avoid_topics);
     settings.next_source = normalize_next_source(&settings.next_source);
@@ -383,4 +400,5 @@ settings.ai_provider = normalize_ai_provider(&settings.ai_provider);
 pub fn normalize_language(language: &str) -> String {
-    if LANGUAGES.contains(&language) {
-        language.to_string()
+    let language = language.trim().to_lowercase();
+    if LANGUAGES.contains(&language.as_str()) {
+        language
     } else {
@@ -764,3 +782,7 @@ "python".to_string()
         .collect::<Vec<_>>();
-    let preferred = &state.suggested_next_difficulty;
+    let preferred = if state.settings.difficulty == "auto" {
+        &state.suggested_next_difficulty
+    } else {
+        &state.settings.difficulty
+    };
     let problem = bank
@@ -767,0 +789,0 @@ .iter()

New alerts

AI-detected potential code anomaly

Supply chain risk

AI has identified unusual behaviors that may pose a security risk.

Fixed alerts

AI-detected potential code anomaly

Supply chain risk

AI has identified unusual behaviors that may pose a security risk.

Found 2 instances

Improved metrics

Total package byte prevSize

189612

6.08%

Number of package files

30

11.11%

Lines of code

355

5.97%

Number of lines in readme file

153

5.52%

Number of low supply chain risk alerts

3

-25%

No dependency changes