Zero-pad chapter numbers to 3 digits (01 -> 001)
GitHub's default wiki sidebar lists pages alphabetically since this
wiki has no custom _Sidebar page. Mixed-width numbering (01..99 vs
100..180) sorted incorrectly as strings (e.g. "100" < "11").
Renaming chapters 1-99 to 001-099 fixes navigation order and keeps
it consistent with the existing 100-180 files.
Fix broken internal wiki links (strip ./ prefix and .md suffix)
GitHub wiki does not resolve [Text](./Page.md) as an internal page
reference; it renders the literal relative URL, which 302s to the
wiki root instead of the target page. Internal links must use
[Text](Page-Name) with no ./ prefix or .md extension.
Fix final-review findings: pattern links, DS back-links, Home.md numbering
- Add disclosed-stretch Pattern links to 4 Arrays & Hashing chapters
(31, 32, 34, 39) that previously had zero Pattern-chapter link,
violating the >=1 DS + >=1 Pattern minimum.
- Add Data Structure back-links to 9 Pattern chapters (16, 17, 18, 19,
20, 23, 24, 27, 29) per the plan's "Pattern links back to its DS
foundation where relevant" rule.
- Renumber Home.md's Heap/Priority Queue list from global (94-100) to
local (1-7), matching every other category subsection.
Add Bit Manipulation problems
Add Math & Geometry problems
Add Advanced Graphs problems
Add Backtracking problems
Add Heap/Priority Queue problems
Add Binary Search problems
Add Sliding Window problems
Add Two Pointers problems
Add Arrays & Hashing problems
Add Patterns chapters 10-17 (Prefix Sum through Bit Manipulation Tricks)
Add Patterns chapters 1-9 (Two Pointers through Monotonic Stack)
Add Data Structures chapters 7-12 (BST through Segment/Fenwick Trees)
Add Data Structures chapters 1-6 (Arrays through Binary Trees)
Add Big-O Notation chapter