v1.6.0

[1.6.0] - 2026-05-31

feat: hybrid code search — exact + semantic in one call (#67)

Adds a hybrid_search tool ("grep on steroids") that fuses exact matching
(regex/keyword) with semantic ranking over a symbol-aware local index, in a
single call. It surfaces code that does what you describe even when it
doesn't contain the query words, and ranks plain grep-style hits by relevance.

• New module src/tools/hybrid_search.js: walks source files (honoring the
  shared ignore list), splits them into symbol-centered chunks (lightweight
  AST-ish boundary detection across JS/TS/Python/Go/Rust/Java/etc.), and scores
  each chunk with BM25 + a hashed bag-of-words vector, boosting exact matches.
• Modes: hybrid (default), regex, keyword, semantic.
• Fully local and dependency-free — reuses the existing src/rag/index_store
  scoring engine, so there are no model downloads, no native runtime, and no
  external services. Inspired by the projects suggested in #67 (colgrep,
  semble) but kept zero-dependency to match SmallCode's local-first design.
• Wired into the executor, tool schemas, the search/code-intel routing
  categories, and tool-call dedup. Path arguments are contained to the project
  via safeResolvePath.
• Tunables: SMALLCODE_HYBRID_MAX_FILES (default 1500),
  SMALLCODE_HYBRID_MAX_BYTES (default 512KiB).
• Test coverage: test/hybrid_search.test.js (11 cases). Full suite: 313
  passing.

feat: refreshed terminal UI visuals (#72)

Visual-only refresh of the TUI renderer (no runtime/raw-mode changes):

• Compact rounded-corner welcome banner card (logo, version, model, endpoint,
  cwd) with responsive fallbacks for narrow viewports.
• Stable 10-character gutters (USER/AI/SYS/TOOL/DIFF) for aligned
  transcripts, semantic tool-row icons, and a fixed-height command palette.
• Restyled status bar (left action / centered scroll+tokens / right
  model+brand+busy state) with width-aware truncation.
• New src/tui/utils.js width helper (fitAnsi) — CJK-aware and
  surrogate-pair-safe; full wcwidth/ZWJ grapheme handling is intentionally out
  of scope. Adds test/tui_layout.test.js (viewport adaptation cases).
• Fixes a prompt-inject plugin module path (../../ → ../../../).