Add suggest-flow escape clause to Alliance appendix step 4

[jonathanMLDev]

Problem

The suggest-flow gate behavior is correctly implemented and intentionally differs between Core (gate off by default) and Alliance (gate on by default, escapable via PINECONE_DISABLE_SUGGEST_FLOW=true). This is not a code defect.

There is a minor inconsistency within ALLIANCE_INSTRUCTIONS_APPENDIX in src/constants.ts:

• Line 71 documents the escape hatch: "...mandatory gate unless PINECONE_DISABLE_SUGGEST_FLOW=true."
• Line 74 (Alliance usage step 4) says only "mandatory flow gate" with no escape clause.

An LLM reading only step 4 may infer the gate is unconditional, contradicting line 71 and docs/TOOLS.md.

Acceptance Criteria

• Alliance appendix step 4 (or its replacement after issue De-duplicate Alliance usage section numbering in MCP instructions #194) includes the unless PINECONE_DISABLE_SUGGEST_FLOW=true escape clause, consistent with line 71 and docs/TOOLS.md
• No change to Core vs Alliance default behavior (disableSuggestFlow defaults remain Core true, Alliance false)
• Update src/constants.test.ts if the appendix structure changes in issue De-duplicate Alliance usage section numbering in MCP instructions #194 — coordinate so both issues land cleanly

Implementation Notes

• Low-priority cosmetic fix; may be combined with issue De-duplicate Alliance usage section numbering in MCP instructions #194 (de-duplicate Alliance usage numbering) in a single PR
• If issue De-duplicate Alliance usage section numbering in MCP instructions #194 replaces the numbered step 4 with an unnumbered bullet, include the escape clause in that bullet instead

References

• src/constants.ts — ALLIANCE_INSTRUCTIONS_APPENDIX lines 71 and 74
• src/core/config.ts — Core disableSuggestFlow default true
• src/alliance/config.ts — Alliance disableSuggestFlow default false
• docs/TOOLS.md — suggest-flow gate documentation