docs: refresh architecture + team-memory SVGs for 3.17.0

The two diagrams the README embeds (Agent Integration + Architecture
sections) were stale — the architecture diagram still listed 108 core
modules / 21 infrastructure, and the team-memory diagram showed only
four human-driven agents with no mention of the autonomous wiki
worker.

# diagram-architecture.svg

* Bumped to a 720×540 canvas to fit the wiki curation subsystem
  callout + the autonomous-loop arrow on the bottom row.
* Module counts refreshed: core 175+ · infrastructure 33 ·
  handlers 91+ (49 MCP-exposed) · hooks 9 · server 4 · shared 11.
* New "Wiki curation subsystem (3.17.0)" dashed-gold box inside
  core/ naming every module that implements the autonomous loop
  (wiki_coverage, wiki_curation_gaps, wiki_drift,
  wiki_file_doc_skeleton, wiki_coverage_dashboard, auto_task_record,
  wiki_stub_detector, auto_curator) plus the "42 canonical scopes ·
  14 file-doc sections" headline.
* New gold dashed arrow from hooks/ → consolidate_background showing
  the stamp-gated 6-hour spawn.
* Footer expanded with the explicit dependency-rule statement
  (shared → stdlib only; core → shared; etc.) so the diagram is
  self-explanatory.

# diagram-team-memory.svg

* Canvas grown to 900×460 to fit a fifth agent column.
* New gold-bordered "Wiki worker" box alongside Engineer/Tester/
  Reviewer/Researcher — labelled "NEW in 3.17.0", topic
  ``wiki-curation``, descriptor "claude -p · headless".
* New "Autonomous wiki layer" panel inside the Postgres box,
  showing the three columns of value the curation subsystem
  delivers (42 canonical scopes · 14 sections per file-doc · visible
  curation gaps).
* New dashed-gold callout under the Postgres box explaining the
  loop: SessionStart → 6h-stamp check → spawn consolidate_background
  → headless_authoring drains via claude -p. "No cron, no daemon,
  no manual invocation".
* Sources line at the bottom citing Wegner 1987 (transactive memory),
  McGaugh 2004 (memory protection), Friston 2010 (predictive coding
  write gate).

Both SVGs validate as XML; the README references them unchanged.

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

Author: cdeust