Phases 0-1 + Sprint A: module split, CLI layer, org-refresh fix, hygiene

- LICENSE (MIT) + README truth-pass; docs/cli.md CLI contract
- CLI subcommands (src/cli_cmds/) per "TUI for users, CLI for users+AI"
- Hub/detail refactor: keymap dispatch, modal split, action enum, BgMsg bus
- Fix: org repos were never refreshed (owner==username match); refresh now
  parallel — 49 repos in ~11s, surfaced 70 previously invisible PRs
- Fix: 3 date bugs in detail/git.rs (format-local, Local::now, 1y month math)
- Stash indicator + [m] actions, session persistence, gh CLI token fallback
- Legacy UI modules removed; plan/ docs (roadmap, audit, debate, handoff)

src/hub/session.rs

@@ -0,0 +1,48 @@
+//! Session persistence (`~/.vulp/session.toml`): remembers the active tab
+//! and the repo under the cursor between runs. Deliberately tiny — filters
+//! and text search are NOT restored (surprising UX), only "where was I".
+
+use super::state::Tab;
+use serde::{Deserialize, Serialize};
+use std::path::PathBuf;
+
+#[derive(Serialize, Deserialize, Default)]
+pub struct Session {
+    #[serde(default)]
+    pub tab: u8,
+    #[serde(default)]
+    pub cursor_repo_path: Option<PathBuf>,
+}
+
+fn path() -> PathBuf {
+    dirs::home_dir().unwrap_or_else(|| PathBuf::from("~")).join(".vulp").join("session.toml")
+}
+
+pub fn tab_to_u8(tab: Tab) -> u8 {
+    match tab {
+        Tab::Overview => 0, Tab::Repos => 1, Tab::Projects => 2, Tab::Todos => 3,
+        Tab::PRs => 4, Tab::Issues => 5, Tab::Stats => 6, Tab::Activity => 7,
+        Tab::HubSettings => 8,
+    }
+}
+
+pub fn u8_to_tab(v: u8) -> Tab {
+    match v {
+        1 => Tab::Repos, 2 => Tab::Projects, 3 => Tab::Todos, 4 => Tab::PRs,
+        5 => Tab::Issues, 6 => Tab::Stats, 7 => Tab::Activity, 8 => Tab::HubSettings,
+        _ => Tab::Overview,
+    }
+}
+
+pub fn load() -> Session {
+    let p = path();
+    if !p.exists() { return Session::default(); }
+    toml::from_str(&std::fs::read_to_string(p).unwrap_or_default()).unwrap_or_default()
+}
+
+pub fn save(tab: Tab, cursor_repo_path: Option<PathBuf>) {
+    let s = Session { tab: tab_to_u8(tab), cursor_repo_path };
+    let p = path();
+    if let Some(d) = p.parent() { let _ = std::fs::create_dir_all(d); }
+    if let Ok(body) = toml::to_string_pretty(&s) { let _ = std::fs::write(p, body); }
+}