
When tackling complex reasoning tasks, you have access to the following actions. Use them as needed to progress through your thought process.

[ASSESS]

[ADVANCE]

[VERIFY]

[SIMPLIFY]

[SYNTHESIZE]

[PIVOT]

[OUTPUT]

You should strictly follow the format below:

[ACTION NAME]

# Your action step 1

# Your action step 2

# Your action step 3

...

Next action: [NEXT ACTION NAME]


system
Given the complex number $z=(m^{2}+5m-6)+(m^{2}-2m-15)i$, where $i$ is the imaginary unit and $m \in \mathbb{R}$.
1. If the complex number $z$ corresponds to a point on the angle bisector of the first and third quadrants in the complex plane, find the value of the real number $M$.
2. When the real number $m=-1$, find the value of $| \frac{z}{1+i}|$.

Present the answer in LaTex format: \boxed{Your answer}
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