v0.1.2

Added

• fmt::Display implementations for the public diagnostic enums so
  consumers no longer need format!("{:?}", ...):
  • CompressionMethod → "deflate", "bzip2", "lzma", "none".
  • CompressionMode → "solid", "non-solid".
  • StringEncoding → "ANSI", "Unicode", "Park".
  • NsisVersion → "NSIS 1", "NSIS 2", "NSIS 3", "NSIS Park".
  • RegValueType → "REG_SZ", "REG_EXPAND_SZ", "REG_BINARY",
    "REG_DWORD", "REG_MULTI_SZ", "REG_UNKNOWN(N)".
• Callback enum (src/installer/callback.rs) covering the ten
  common-header callback slots (OnInit, OnInstSuccess,
  OnInstFailed, OnUserAbort, OnGuiInit, OnGuiEnd,
  OnMouseOverSection, OnVerifyInstDir, OnSelChange,
  OnRebootFailed). Provides:
  • Callback::ALL — all ten variants in common-header order.
  • Callback::name() — canonical NSIS script name (e.g. ".onInit").
  • Callback::index() — slot index (0..10) into the common-header
    callback array.
  • fmt::Display — delegates to name().
• NsisInstaller::callback(Callback) -> Option<usize> — generic
  accessor that returns the entry index for any callback slot,
  complementing the existing per-callback on_init() / on_inst_success()
  / etc. methods.
• All standard EW_* opcode constants are re-exported at the crate root,
  so upstream analysis crates can match opcode numbers without importing
  the internal opcode module.
• Section::contains_entry(usize) -> bool — returns true when the
  given entry index falls within the section's [code, code+code_size)
  range. Treats negative code/code_size as zero, so consumers no
  longer need defensive .max(0) casts before doing range checks.
• NsisInstaller::section_contains_entry(section_idx, entry_idx) -> bool
  — convenience wrapper that resolves the section by index and applies
  Section::contains_entry.

Changed

• The clippy panic-prevention lint set
  (unwrap_used, expect_used, panic, arithmetic_side_effects,
  indexing_slicing) is now declared deny in
  Cargo.toml [lints.clippy], so the policy holds regardless of the
  consuming workspace. Previously only missing_docs and unsafe_code
  were denied (in src/lib.rs).
• Triage and clearance of the 310 lint violations exposed by the new
  policy. Affected files (paths relative to src/):
  addressmap.rs, decompress/{bzip2,lzma,mod}.rs,
  header/{blockheader,commonheader,firstheader,mod}.rs,
  installer/{analysis,files,nsisinstaller}.rs,
  nsis/{ctlcolors,entry,langtable,page,section}.rs,
  opcode/mod.rs,
  strings/{ansi,mod,park,unicode}.rs,
  util.rs.
  Patterns applied:
  • &[u8] indexing → .get(...) with Option/Result propagation.
  • Offset/size arithmetic → checked_add / checked_sub /
    saturating_*.
  • .unwrap() / .expect() on parse steps → ?-propagated
    Error arms.
    Tests retain the convenience of unwrap/expect/panic via the
    cfg_attr(test, allow(...)) escape hatch in src/lib.rs.

Fixed

• Carried forward from in-progress work on main: park opcode mapping
  correction and uninstaller data extraction (see commit 1778513).