feat(install): add curl|sh one-liner installer for the memorizz CLI

  curl -fsSL https://raw.githubusercontent.com/RichmondAlake/memorizz/main/install.sh | sh

Bootstraps uv (standalone, no Python required), then `uv tool install`s the CLI;
falls back to pipx then pip --user. Pins `--python 3.12` because uv otherwise
defaults to whatever interpreter it finds first — and an interpreter <3.10 makes
it silently resolve a stale memorizz (0.1.0 requires >=3.10). Verified end-to-end:
installs 0.1.0 and `memorizz --version` works.

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>

Author: RichmondAlake

install.sh

@@ -0,0 +1,73 @@
+#!/usr/bin/env sh
+# memorizz CLI installer.
+#
+#   curl -fsSL https://raw.githubusercontent.com/RichmondAlake/memorizz/main/install.sh | sh
+#
+# Installs the `memorizz` interactive CLI via uv (a standalone binary that
+# manages its own Python — no pre-existing Python required). Falls back to pipx,
+# then pip --user. Safe to re-run; upgrades in place.
+
+set -u
+
+INFO() { printf '\033[36m[memorizz]\033[0m %s\n' "$1"; }
+WARN() { printf '\033[33m[memorizz]\033[0m %s\n' "$1" >&2; }
+ERR() { printf '\033[31m[memorizz]\033[0m %s\n' "$1" >&2; }
+
+have() { command -v "$1" >/dev/null 2>&1; }
+
+# Resolve a uv binary: already on PATH, in its default install dir, or freshly
+# installed via the official standalone installer.
+find_uv() {
+  if have uv; then echo "uv"; return 0; fi
+  for d in "$HOME/.local/bin" "$HOME/.cargo/bin" "$HOME/.local/share/uv/bin"; do
+    if [ -x "$d/uv" ]; then echo "$d/uv"; return 0; fi
+  done
+  return 1
+}
+
+UV="$(find_uv || true)"
+if [ -z "${UV:-}" ]; then
+  INFO "Installing uv (standalone; no Python required)…"
+  if have curl; then
+    curl -LsSf https://astral.sh/uv/install.sh | sh
+  elif have wget; then
+    wget -qO- https://astral.sh/uv/install.sh | sh
+  else
+    ERR "Need curl or wget to install uv. Install one and re-run."
+    exit 1
+  fi
+  UV="$(find_uv || true)"
+fi
+
+if [ -n "${UV:-}" ]; then
+  # Force a modern Python: memorizz needs >=3.10, and without this uv may fall
+  # back to an older interpreter and silently resolve a stale memorizz release.
+  INFO "Installing memorizz via uv (Python 3.12)…"
+  if "$UV" tool install --force --python 3.12 memorizz; then
+    "$UV" tool update-shell >/dev/null 2>&1 || true
+    INFO "Installed. Start it with:  memorizz"
+    INFO "(If 'memorizz' isn't found, restart your shell or add ~/.local/bin to PATH.)"
+    exit 0
+  fi
+  WARN "uv install failed — trying pipx, then pip."
+fi
+
+if have pipx; then
+  INFO "Installing memorizz via pipx…"
+  if pipx install --force memorizz; then
+    INFO "Installed (pipx). Start it with:  memorizz"
+    exit 0
+  fi
+fi
+
+if have python3; then
+  INFO "Installing memorizz via pip --user…"
+  if python3 -m pip install --user --upgrade memorizz; then
+    INFO "Installed (pip --user). Start it with:  memorizz"
+    exit 0
+  fi
+fi
+
+ERR "Could not install memorizz automatically."
+ERR "Install uv from https://astral.sh/uv then run:  uv tool install memorizz"
+exit 1