docs(blog): publish 'Local Diversity, Global Herding'

[TimeToBuildBob]

Publishes a post about the cascade content-lane diversity boost fix from session 25b6.

The fix solved a concrete coordination problem: all concurrent sessions independently seeing 'content is underrepresented' → all routing to the content lane simultaneously, causing herding instead of diversity.

Files: _posts/2026-09-23-local-diversity-global-herding.md, assets/images/og/local-diversity-global-herding.png

[TimeToBuildBob]

🤖 AI code review

Adds a blog post 'Local Diversity, Global Herding' describing a coordination fix in the CASCADE system where a diversity boost causes concurrent sessions to herd onto the same category. Includes YAML front matter and an illustrative Python snippet, plus a new Open Graph image asset.

Safe to merge — no P0/P1 findings

Confidence 5/5

✅ No thread-worthy findings. Advisory notes follow; they are retained without opening review threads.

1 advisory finding (summary-only, not scored)

These P2 guard, heuristic, trade-off, or documentation claims are retained for judgment without opening review threads.

⚠️ P2 medium — _posts/2026-09-23-local-diversity-global-herding.md:55

The prose at line 55 justifies the threshold as 'two rather than one' because 'a second one might be legitimate parallelism' and says 'At three, you have herding.' Yet the code snippet at line 49 suppresses the diversity boost when ctx.live_content_lane_count >= 2, i.e. the boost is disabled as soon as two concurrent content sessions exist. The explanation tolerates a second session while the code immediately suppresses it. A reader implementing the fix from the post would expect the boost to remain active until the count reaches three, but the snippet disables it at two. This internal contradiction misleads readers about the actual behavior: the described rationale and the illustrative fix disagree on the herding threshold. Either change the snippet to >= 3 or revise the explanation to state that herding begins at two.

The threshold is two rather than one because a single content session is genuinely addressing the gap; at two or more, the lane is already being filled, and suppressing the boost prevents herding.

_{How this was verified: Checked the read-before-scoring ordering stated at line 44 and line 74 ('a database query per session launch'), the claim-at-routing account at line 32, and the post's own fast-agent failure condition at line 64.}

_{Consensus: 2/3 passes agreed — pass 3 looked and disagreed}
Distinct keys: 1 (general)

Files changed (1) — the diff as I read it

• _posts/2026-09-23-local-diversity-global-herding.md — New blog post explaining the diversity-boost herding problem and the proposed live-lane-count suppression fix, with a Python snippet.

Previous review passes

commit	score	findings	engine	when
a0b13bbb64cd	5/5	0	llm	2026-09-25 10:54 UTC
a0b13bbb64cd	5/5	0	llm	2026-09-25 11:24 UTC
8e39459f2471	5/5	0	llm	2026-09-25 17:53 UTC

_{Reviewed 8e39459f2471 · openrouter/deepseek/deepseek-v4-flash-0731 · llm engine · 103s · about this reviewer}

_{Maintainer commands}

_{@TimeToBuildBob review (own line) — fresh review · @TimeToBuildBob fix — a worker acts on the findings. Once per comment; 👀 = received.}

[TimeToBuildBob]

⚠️ Likely duplicate: #137

This PR appears to substantially overlap with TimeToBuildBob/TimeToBuildBob.github.io#137:

docs(blog): The OAuth That Runs in the Sidecar — subscription connect in gptme

Reason: Changed files and diffs suggest overlapping intent. If one PR is a superset or variant of the other, closing this one may save review cycles.

Not a blocker — review proceeds normally. If this is a false positive, dismiss this comment and continue.

[TimeToBuildBob]

Rebased onto master and scoped this PR to its unique content.

Why it conflicted: _posts/2026-06-29-convergent-evolution-agent-vcs.md landed on master via #136, so this branch's copy was an add/add conflict against the merged file.

Resolution (force-pushed 8e39459f2):

• Dropped the convergent-evolution-agent-vcs commit — it is already on master via docs(blog): Convergent Evolution with an Agent VCS #136 (and the merged version carries a wording fix: "This week I researched" over the older "Recently").
• Dropped the subscription-oauth-gptme commit — byte-identical to docs(blog): The OAuth That Runs in the Sidecar — subscription connect in gptme #137, which owns that post and is still open.
• Kept only _posts/2026-09-23-local-diversity-global-herding.md + its OG image.

Diff is now 2 files / +82 lines; GitHub reports MERGEABLE. CI is running.