⬆️ version bump to v4.5

- Update obioptions.Version from "Release 4.4.29" to "/v/ Release v5"
- Update version.txt from 4.29 → .30
(automated by Makefile)

autodoc/docmd/pkg/obifp/uint64.md

@@ -0,0 +1,34 @@
+# Uint64 Type Functionalities Overview
+
+The `obifp` package provides a custom `Uint64` type wrapping Go’s native 64-bit unsigned integer (`uint64`) to support arithmetic, bitwise operations, and type conversions in a structured way.
+
+## Core Operations
+
+- **`Zero()` / `MaxValue()`**: Returns the zero and maximum representable values, respectively.
+- **`IsZero()` / `Equals(v)`**: Checks if the value is zero or equal to another.
+- **`Cmp(v)`, `LessThan(v)`**, etc.: Standard comparison operations returning `-1/0/+1` or boolean results.
+
+## Arithmetic with Overflow Detection
+
+- **Add/Sub/Mul**: Performs 64-bit addition, subtraction, and multiplication.
+  - Uses `math/bits` for low-level operations (`bits.Add64`, etc.).
+  - Panics on overflow (carry ≠ 0), enforcing strict safety.
+
+## Bitwise Operations
+
+- **`And`, `Or`, `Xor`, `Not()`**: Standard bitwise logic operations.
+- **`LeftShift(n)` / `RightShift(n)`**:
+  - Shifts bits left/right by *n* positions.
+  - Uses internal `LeftShift64`/`RightShift64`, supporting *carry-in* for multi-word arithmetic.
+
+## Extended Precision Conversions
+
+- **`Uint128()` / `Uint256()`**: Casts the 64-bit value into larger unsigned integer types (zero-extended).
+- **`Set64(v)`**: Reassigns the internal value from a raw `uint64`.
+
+## Utility & Logging
+
+- **`AsUint64()`**: Extracts the underlying `uint64`.
+- **Warning on overflow in shift operations** (e.g., shifts ≥ 128 bits) via `obilog.Warnf`.
+
+> Designed for use in high-precision or cryptographic contexts where explicit overflow handling and type safety are critical.