Add GPT5Mini final_answer and preamble instructions

[AbdelrahmanAbouelenin]

This PR adds two new instruction sections:

1. final_answer_instructions: Provides comprehensive formatting guidelines for final answers including structure, data presentation, visual enhancement, and readability best practices.

2. preamble_instructions: Defines guidelines for writing preambles between tool calls, including cadence, content focus, voice & openings with varied sentence starters, format templates, and DO/DON'T rules.

Both sections are conditionally rendered only when isGpt5Mini is true and are positioned after the outputFormatting tag in the DefaultAgentPrompt class.

[Copilot]

Pull Request Overview

Adds two new conditional instruction blocks (final_answer_instructions and preamble_instructions) to the DefaultAgentPrompt, shown only when isGpt5Mini is true. These define formatting expectations for final answers and preamble style between tool calls.

• Adds final answer formatting guidelines (structure, data presentation, readability).
• Adds detailed preamble behavior rules (cadence, voice, templates, do/don't).
• Injects both blocks after the existing outputFormatting-related section behind isGpt5Mini conditional.

[Copilot]

Correct spelling: 'premable' -> 'preamble'. Also the capital 'It' mid‑sentence should be lowercase for grammatical consistency.

Suggested change

	- In the first premable message, It is better that you send one or two friendly greeting sentences acknowledging the request + stating the immediate action. (Optional).<br />
	- In the first preamble message, it is better that you send one or two friendly greeting sentences acknowledging the request + stating the immediate action. (Optional).<br />

[Copilot]

Correct spelling: 'enthusiastical' should be 'enthusiastic'.

Suggested change

	- When you have a **clear finding**, begin enthusiastically (e.g., "Perfect! I found …", "Great! The cause is …", "Nice! I see the issue is …" ). Keep it to **2 sentences**. (enthusiastical word like "Perfect!" is not counted as a sentence)<br />
	- When you have a **clear finding**, begin enthusiastically (e.g., "Perfect! I found …", "Great! The cause is …", "Nice! I see the issue is …" ). Keep it to **2 sentences**. (enthusiastic word like "Perfect!" is not counted as a sentence)<br />

[Copilot]

Grammatical correction: 'your' should be 'you' ('The preamble you write...').

Suggested change

	The preamble your write should follow these guidelines. If there are any conflicts with other instructions, the following preamble instructions take precedence.<br />
	The preamble you write should follow these guidelines. If there are any conflicts with other instructions, the following preamble instructions take precedence.<br />

[Copilot]

[nitpick] Phrase 'In every 5 preambles window' is unclear/awkward; consider 'Within any window of 5 preambles, the opening MUST differ' for clarity on the constraint.

Suggested change

	- Prefer varied openings; if you used "I'll" or "I will" recently, in the next preamble, you MUST use a different opening. In every 5 preambles window, the opening MUST be different.<br />
	- Prefer varied openings; if you used "I'll" or "I will" recently, in the next preamble, you MUST use a different opening. Within any window of 5 preambles, the opening MUST differ.<br />

[Copilot]

[nitpick] Phrase 'in 5 preambles windows' is grammatically incorrect; suggest 'within a 5‑preamble window' or 'within any set of 5 consecutive preambles'.

Suggested change

	- Don't use repeated openings like "I will" or "Proceeding to" in 5 preambles windows (IMPORTANT!).<br />
	- Don't use repeated openings like "I will" or "Proceeding to" within a 5‑preamble window (IMPORTANT!).<br />

[Copilot]

[nitpick] These large static instruction blocks inline the full text, making the component harder to scan. Consider extracting each into dedicated React components or external markdown/template constants (e.g., and ) to reduce file size and improve reuse.

[Copilot]

[nitpick] These large static instruction blocks inline the full text, making the component harder to scan. Consider extracting each into dedicated React components or external markdown/template constants (e.g., and ) to reduce file size and improve reuse.

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This Contribution License Agreement (“Agreement”) is agreed to by the party signing below (“You”),
and conveys certain license rights to Microsoft Corporation and its affiliates (“Microsoft”) for Your
contributions to Microsoft open source projects. This Agreement is effective as of the latest signature
date below.

1. Definitions.
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   that is delivered by You to Microsoft under this Agreement.
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  parties.
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  indirectly from Microsoft, a perpetual, worldwide, non-exclusive, royalty-free, irrevocable license under
  Your patent claims that are necessarily infringed by the Submission or the combination of the
  Submission with the Project to which it was Submitted to make, have made, use, offer to sell, sell and
  import or otherwise dispose of the Submission alone or with the Project.
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   licenses. You represent that each of Your Submissions is entirely Your original work (except as You may
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   have the necessary authority to bind the listed employer to the obligations contained in this Agreement.
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   REQUIRED BY APPLICABLE LAW OR AGREED TO IN WRITING, AND EXCEPT FOR THE WARRANTIES
   EXPRESSLY STATED IN SECTIONS 3, 4, AND 6, THE SUBMISSION PROVIDED UNDER THIS AGREEMENT IS
   PROVIDED WITHOUT WARRANTY OF ANY KIND, INCLUDING, BUT NOT LIMITED TO, ANY WARRANTY OF
   NONINFRINGEMENT, MERCHANTABILITY, OR FITNESS FOR A PARTICULAR PURPOSE.
7. Notice to Microsoft. You agree to notify Microsoft in writing of any facts or circumstances of which
   You later become aware that would make Your representations in this Agreement inaccurate in any
   respect.
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   contributions may be maintained indefinitely and disclosed publicly, including Your name and other
   information that You submit with Your Submission.
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   the parties consent to exclusive jurisdiction and venue in the federal courts sitting in King County,
   Washington, unless no federal subject matter jurisdiction exists, in which case the parties consent to
   exclusive jurisdiction and venue in the Superior Court of King County, Washington. The parties waive all
   defenses of lack of personal jurisdiction and forum non-conveniens.
10. Entire Agreement/Assignment. This Agreement is the entire agreement between the parties, and
    supersedes any and all prior agreements, understandings or communications, written or oral, between
    the parties relating to the subject matter hereof. This Agreement may be assigned by Microsoft.

[roblourens]

Thanks, can you tell me more about where these instructions come from and what the motivation is?