base64-ng 1.0.4

v1.0.4

What's Changed

• Continued the 1.0.x source-layout cleanup by moving stack-backed and owned buffer wrappers into src/buffers.rs.
• Preserved public root exports and API behavior for EncodedBuffer, DecodedBuffer, SecretBuffer, and exposed wrapper types.
• Kept stack-backed buffer length invariants encapsulated with checked internal setters after the module split.
• Added clearer security notes to DecodedBuffer and SecretBuffer idiomatic conversions, documenting that TryFrom and FromStr use the strict standard decoder rather than the constant-time-oriented ct decoder.
• Excluded local README image assets from the published crate package to keep crates.io artifacts smaller.
• Tightened AArch64 high-assurance runtime posture reporting by distinguishing unattested hardware speculation barriers.

Verification

• Full release gate passed.
• CodeQL and pentest clean.
• Zero runtime dependencies retained.
• no_std, wasm wipe policy, SIMD admission guards, panic policy, CT policy, fuzz harness, and docs checks passed.