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feat(pm-product-strategy): add seven-powers skill

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Adds Hamilton Helmer's 7 Powers framework skill for assessing durable
competitive advantage (scale economies, network effects, counter-
positioning, switching costs, branding, cornered resource, process
power). Updates skill counts and descriptions across marketplace.json,
plugin.json, and READMEs.

Merged from louzhedong:codex/add-seven-powers-skill (PR vs phuryn/pm-skills).

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01KcEyZ9gTqwkoiDBfW4fVzu
This commit is contained in:
Justin Paul
2026-06-22 21:40:14 -04:00
parent a0cd730d4c
commit a330c887f6
5 changed files with 213 additions and 7 deletions
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.claude-plugin/marketplace.json
+1 -1
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@@ -17,7 +17,7 @@
},
{
"name": "pm-product-strategy",
"description": "Product strategy skills for PMs: vision, strategy canvas, value propositions, lean canvas, business model canvas, SWOT, PESTLE, Ansoff Matrix, Porter's Five Forces, and monetization.",
"description": "Product strategy skills for PMs: vision, strategy canvas, value propositions, lean canvas, business model canvas, SWOT, PESTLE, Ansoff Matrix, Porter's Five Forces, Seven Powers, and monetization.",
"source": "./pm-product-strategy",
"category": "product-management"
},