Add terminal client, memory, model fallback, version and install improvements

- codecraft: full-screen terminal client (ratatui) – local tools and files,
  models via the CodeCraft server gateway or own providers (standalone with a
  guided setup), slash commands, @files, permission dialogs, resume, update
- Static Linux CLI builds (x86_64/aarch64, cargo-zigbuild) served by the
  server: /cli/install.sh and /cli/download/<target>
- Project memory (remember tool, .codecraft/memory.md) and personal memory
- Model fallback when a host is unreachable or a budget is used up
- Version/commit in UI and health, daily release check, "What's new" dialog
- PWA: install button, maskable icon, manifest id and screenshots
- Case-insensitive detection of connection errors for retries

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

Dockerfile

@@ -22,9 +22,31 @@ RUN mkdir -p core/src server/src cli/src \
     && cargo build --release -p codecraft && rm -rf core/src server/src cli/src
 COPY core/src ./core/src
 COPY server/src ./server/src
+COPY server/resources-cli ./server/resources-cli
 COPY cli/src ./cli/src
+ARG GIT_COMMIT=""
+ENV CODECRAFT_COMMIT=${GIT_COMMIT}
 RUN touch core/src/lib.rs server/src/main.rs && cargo build --release -p codecraft
 
+# --- terminal client (static Linux binaries for x86_64 and aarch64) -----------
+FROM rust:1-bookworm AS cli
+RUN apt-get update && apt-get install -y --no-install-recommends cmake xz-utils && rm -rf /var/lib/apt/lists/*
+ARG ZIG_VERSION=0.17.1
+RUN curl -fsSL https://ziglang.org/download/${ZIG_VERSION}/zig-$(uname -m)-linux-${ZIG_VERSION}.tar.xz | tar -xJ -C /opt \
+    && ln -s /opt/zig-*/zig /usr/local/bin/zig \
+    && cargo install --locked cargo-zigbuild \
+    && rustup target add x86_64-unknown-linux-musl aarch64-unknown-linux-musl
+WORKDIR /src
+COPY Cargo.toml Cargo.lock ./
+COPY core ./core
+COPY server/Cargo.toml ./server/
+COPY server/resources ./server/resources
+COPY cli ./cli
+RUN mkdir -p server/src && echo 'fn main(){}' > server/src/main.rs \
+    && cargo zigbuild --release -p codecraft-cli --target x86_64-unknown-linux-musl --target aarch64-unknown-linux-musl \
+    && mkdir -p /out && cp target/x86_64-unknown-linux-musl/release/codecraft /out/codecraft-linux-x86_64 \
+    && cp target/aarch64-unknown-linux-musl/release/codecraft /out/codecraft-linux-aarch64
+
 # --- runtime ------------------------------------------------------------------
 # Node is included so agents can work on JS projects and run npx-based MCP servers.
 FROM node:22-bookworm-slim
@@ -42,6 +64,7 @@ RUN apt-get update && apt-get install -y --no-install-recommends \
 RUN npm install -g typescript@5 typescript-language-server pyright && npm cache clean --force
 COPY --from=server /src/target/release/codecraft /usr/local/bin/codecraft
 COPY --from=web /web/dist /app/web
+COPY --from=cli /out /app/cli
 COPY server/ghidra /app/ghidra
 COPY server/resources /app/resources
 # The agent's home lives on the data volume: tools it installs in user space