Redistribute the chronology across cycles and individual story positions

[RGBKnights]

The Chronology now gives all 154 published stories individual positions across 18 proposed chronological cycles. Related subjects recur in different ages, while actual sequels and short intervals retain their local order. Each placement includes its temporal evidence and an explicit rationale where the date remains open.

• Spread the earlier magical-girl modernity in Not About That into cycle 02, Northbridge into cycle 04, and the Bay battle and its centuries-long aftermath into cycle 05. Preserve the three-afternoon Attendance Ledger / Help Network continuation and the Bay / Dress / Count sequence.
• Distribute recurring kingdoms, schools, dragons, modernities and technological societies across the full history. Preserve the extinction and reawakening boundaries, Nell and Bash's unresolved crossing clocks, and the later Glass Sea.
• Replace thematic era grids with individual events along a continuous spine. Add an orbital cycle navigator, within-cycle position strips, individual placement notes, local-time details, and 27 annotated direct connections or thematic echoes.
• Support story search, separate history and cycle filters, cross-cycle navigation, keyboard focus, light/dark themes, mobile layouts, and native details without JavaScript.
• Validate exactly one placement per published story, complete rationale/confidence coverage, strictly increasing schematic positions, and valid connection endpoints. Rendering follows the stored chronological order and accepts collection growth.

Galactic coordinates and schematic spacing remain editorial proposals. Story packages, canon authority, the publication catalog, and covers are unchanged.

Validation: all 67 repository tests passed; six focused chronology tests passed after the final placement corrections; publication/source/cover parity passed for all 154 stories; static Pages build passed. Browser checks covered desktop and 390px/320px mobile layouts, filters/search/reset, local details, forward and reverse cross-cycle links, focus, orbital navigation, both themes, and JavaScript-free reading.